Free Printable Lesson 4-2 - Equilateral & Isosceles Triangles

1.

Which angle is the vertex angle? #1

a)

<C

b)

<A

c)

<B

2.

Which segment is the base? #2

a)

Segment AB

b)

Segment BC

c)

Segment AC

3.

Find the value of x. #3

HINT: REMEMBER THIS IS AN ISOSCELES TRIANGLE(2 CONGRUENT SIDES AND 2 CONGRUENT BASE ANGLES)

a)

90

b)

45

c)

22

d)

35

4.

Find the value of x. #4

HINT: THIS IS AN ISOSCELES TRIANGLE (2 CONGRUENT SIDES AND 2 CONGRUENT ANGLES)

a)

1

b)

4

c)

5

d)

8

5.

Find the value of y. #5

HINT: THIS IS AN EQUILATERAL TRIANGLE (3 CONGRUENT SIDES AND 3 CONGRUENT 60 DEGREE ANGLES ANGLES)

(a)

6.

What is the measure of ∠A? #6

HINT: THIS IS AN ISOSCELES TRIANGLE (BASE ANGLES ARE CONGRUENT). CHOOSE ANGLE A TO BE X OR THE (UNKNOWN ANGLE).

a)

46

b)

134

c)

90

d)

88

7.

What is the measure of ∠T?

#7

HINT: THIS IS AN ISOSCELES TRIANGLE (BASE ANGLES ARE CONGRUENT) ANGLE S=ANLGE T. THEN USE THE TRIANGLE SUM THEOREM TO SOLVE FOR X AND PLUG X BACK INTO ANGLE T.

a)

4

b)

52

c)

76

d)

25

8.

What is the value of y?

#8

HINT: THIS IS AN ISOSCELES TRIANGLE (BASE ANGLES ARE CONGRUENT) ANGLE M=ANLGE O. THEN USE THE TRIANGLE SUM THEOREM TO SOLVE FOR Y.

(a)

9.

What is the measure of ∠D? #9

HINT: THIS IS AN ISOSCELES TRIANGLE (BASE ANGLES ARE CONGRUENT) ANGLE D=ANLGE E. THEN USE THE TRIANGLE SUM THEOREM TO SOLVE FOR X AND PLUG X BACK INTO ANGLE D.

(a)

10.

If an Isosceles triangle has two BASE angles that are 76°. Then what is the measure of the vertex angle? Label unknown angle as x. #10

HINT: DRAW AND LABEL YOUR TRIANGLE AND USE THE TRIANGLE SUM THEOREM TO SOLVE FOR THE MISSING VERTEX ANGLE.

(a)

11.

Find x if Triangle ABC is an equilateral triangle (all sides are equal and all angles are 60 degrees). #11

a)

2

b)

4

c)

6

d)

8

12.

Classify the triangle. #12

a)

Equilateral

b)

Isosceles

c)

Scalene

d)

Obtuse

13.

Which sides are congruent? #13

a)

AB and AC

b)

AB and BC

c)

AC and BC

d)

ABC and ACB

14.

Solve for x. #14

HINT: THIS IS A EQUILATERAL TRIANGLE (ALL ANGLES ARE EQUAL AND ALL SIDES ARE EQUAL)

a)

30°

b)

40°

c)

50°

d)

60°

15.

ΔCAB and ΔCTB are isosceles.

m ∠CTB = 87º and m ∠CAB = 65º.

Find m ∠ACT. #15

a)

46.5º

b)

104º

c)

57.5º

d)

115º

16.

TG = TR; m∠S = 2x - 10;

m∠STG = x + 10

m∠SGT = 6x

Find m∠S. #16

(a)

17.

ΔGAB is isosceles. The exterior angle at point B measures 138º.

Find m∠A. #17

(a)

18.

ΔBUG is isosceles. m ∠B = x + 10m ∠U = 3x

Find m ∠U. #18

(a)

19.

Find the value of x. #19

a)

7

b)

60

c)

8

d)

-4

20.

Classify the triangle. #20

a)

Equilateral Triangle

b)

Scalene Triangle

c)

Obtuse Triangle

d)

Right Triangle

21.

Select the letter that represents a right isosceles triangle. #21

a)

A

b)

B

c)

C

d)

D

22.

What is the value of x? #22

a)

60

b)

20

c)

15

d)

40

23.

Find the value of x. #23

a)

180

b)

57

c)

61.5

d)

32.7

24.

Solve for the value of x. #24

a)

7

b)

9

c)

10

d)

-11

25.

Which would be the best classification for the triangle shown? #25

a)

acute isosceles

b)

equiangular scalene

c)

equiangular isosceles

d)

equiangular equilateral

26.

ΔDEG and ΔEGF are isosceles triangles and the m ∠EDG = 64º. Find m ∠GEF. #26

a)

32º

b)

64º

c)

52º

d)

116º

27.

What are the measurements of angles J and K? #27

a)

m∠J= 68, m∠K= 136

b)

m∠J= 68, m∠K= 44

c)

m∠J= 67, m∠K= 77

d)

m∠J= 44, m∠K= 68

28.

What is the measurement of angle C and the measurements of BC and AC? #28

a)

m∠C= 55, BC= 8, AC= 8

b)

m∠C= 90, BC= 5, AC= 7

c)

m∠C= 60, BC= 9, AC= 12

d)

m∠C= 60, BC= 9, AC= 9

29.

What is the value of x? Round your answer to the nearest unit. #29

a)

3

b)

17

c)

51

d)

78

30.

#30

a)

75

b)

30

c)

150

31.

What is always true about an isosceles triangle? (SELECT ALL THAT APPLY) #31

a)

At least two sides are congruent

b)

At least two angles are congruent

c)

All of its angles are congruent

d)

All of its sides are congruent

e)

One of the angles is 90 degrees

32.

What is always true about an equilateral triangle? (SELECT ALL THAT APPLY) #32

a)

At least two sides are congruent

b)

At least two angles are congruent

c)

All of its angles are congruent

d)

All of its sides are congruent

e)

One of the angles is 90 degrees

33.

What is the measurement of angle J and K?

a)

m∠J= 68, m∠K= 136

b)

m∠J= 68, m∠K= 44

c)

m∠J= 67, m∠K= 77

d)

m∠J= 44, m∠K= 68

34.

What is the measurement of YZ and the measurement of angle Y?

a)

YZ=12 cm, m∠Y= 77

b)

YZ=6cm, m∠Y= 144

c)

YZ=12cm , m∠Y= 26

d)

YZ=12 cm, m∠Y= 45

35.

What is the measurement of angle C and the measurement of BC and AC?

a)

m∠C= 55, BC= 8, AC= 8

b)

m∠C= 90, BC= 5, AC= 7

c)

m∠C= 60, BC= 9, AC= 12

d)

m∠C= 60, BC= 9, AC= 9

36.

What is the measurement of angle J, K, L?

a)

m∠J= 60, m∠K= 60, m∠L= 60

b)

m∠J= 60, m∠K= 30, m∠L= 90

c)

m∠J= 30, m∠K= 60, m∠L= 90

d)

m∠J= 60, m∠K= 45, m∠L= 75

37.

What is the value of x?

a)

11

b)

12

c)

13

d)

14

38.

Solve for x

a)

9

b)

8

c)

7

d)

6

39.

Solve for x

a)

9

b)

5

c)

7

d)

3

40.

Find the values of x, y, z

a)

x=20 , y=15 , z=12

b)

x=12 , y=15 , z= 20

c)

x=15 , y=12 , z=20

d)

x=20 , y=12 , z=15

41.

What are the values for x, y, z?

a)

x=47 , y=5 , z=10

b)

x=10 , y=5 , z=47

c)

x=47 , y=10 , z=5

d)

x=5 , y=47 , z=10

42.

A triangle with at least 2 congruent sides is called...

a)

Scalene

b)

Isosceles

c)

Right

d)

Obtuse

43.

The two congruent sides of an isosceles triangle are called the...

a)

base

b)

legs

c)

hypotenuse

d)

equilateral

44.

If $\overline{AB}\cong\overline{AC}$ then...

a)

$<B\cong<C$

b)

$<A\cong<C$

c)

$\overline{BC}\cong\overline{AC}$

d)

$\overline{BC}\cong\overline{BA}$

45.

If $\overline{NJ}\cong\overline{NM}$ , then....

a)

$<K\cong<L$

b)

$<J\cong<M$

c)

$\overline{NK}\cong\overline{KL}$

d)

$\overline{JK}\cong\overline{KL}$

46.

If $\overline{LM}\cong\overline{LN}$ , then....

a)

$<LMN\cong<LNM$

b)

$<KLN\cong<MLN$

c)

$\overline{MN}\cong\overline{NJ}$

d)

$\overline{JL}\cong\overline{LM}$

47.

If $<NKM\cong<NMK$ , then....

a)

$\overline{NK}\cong\overline{NL}$

b)

$\overline{JK}\cong<\overline{KN}$

c)

$\overline{NK}\cong\overline{NM}$

d)

$\overline{MK}\cong\overline{MN}$

48.

Find the value of x

a)

25

b)

50

c)

65

d)

130

49.

Find the value of x

a)

3

b)

6

c)

8

d)

12

50.

Find the value of x

a)

20

b)

30

c)

45

d)

60

51.

Find the value of y

a)

4

b)

10

c)

20

d)

100

52.

Find the measure of ∠BAC.

a)

58°

b)

122°

c)

72°

d)

64°

53.

Find the measure of ∠GIH.

a)

72°

b)

54°

c)

122°

d)

35°

54.

Find the measure of ∠HDE

a)

72°

b)

65°

c)

115°

d)

90°

55.

Find the measure of ∠BCA.

a)

46°

b)

134°

c)

55°

d)

28°

56.

Find the side length of AC

a)

10

b)

2

c)

5

d)

12

57.

If ∠DEF≅∠EFD, then...

a)

DE ≅ EF

b)

DF ≅ EF

c)

DE ≅DF

d)

All the sides are ≅

58.

Find the side length of AB.

a)

10

b)

9

c)

2

d)

5

59.

Find the measure of ∠CBA

a)

94°

b)

120°

c)

65°

d)

38°

60.

If AB ≅ AC, then...

a)

∠ABC≅∠BCA

b)

∠ABC≅∠CAB

c)

∠CAB≅∠BCA

d)

No angles are ≅

61.

Find the measure of ∠HCD.

a)

45°

b)

65°

c)

115°

d)

72°

62.

What do the angles in an equilateral triangle measure?

a)

30, 60, 90

b)

60, 60, 60

c)

45, 45, 90

d)

35, 55, 90

63.

The sides of an equilateral triangle have...

a)

different measures.

b)

90^o

c)

equal measures.

d)

60°.

64.

What type of triangle is this?

a)

Equilateral

b)

Isosceles

c)

Scalene

d)

Obtuse

65.

Which segment is the base?

a)

Segment AB

b)

Segment BC

c)

Segment AC

66.

Which angle is the vertex angle?

a)

<C

b)

<A

c)

<B

67.

If an isosceles triangle has a base angle measuring 40°, then what measure is the VERTEX angle?

a)

120°

b)

100°

c)

40°

d)

80°

68.

If two sides of a triangle are congruent, then the _________________ opposite those sides are congruent.

a)

sides

b)

vertices

c)

angles

d)

measures

69.

What is the value of the missing angle?

a)

61

b)

50

c)

60

d)

69

70.

What is the measure of BC?

a)

12

b)

6

c)

9

d)

10

71.

What is the measure of ∠T?

a)

45

b)

30

c)

60

d)

180

72.

What is the value of x?

a)

16

b)

60

c)

8

d)

10

73.

What is the measure of ∠A?

a)

46

b)

134

c)

90

d)

88

74.

Find x

a)

90

b)

45

c)

22

d)

35

75.

Find x

a)

10

b)

32

c)

116

d)

16

76.

Find x

a)

3

b)

4

c)

2

d)

10

77.

What is the length of DF?

a)

8

b)

4

c)

25

d)

71

78.

What is the length of side JK?

a)

12

b)

30

c)

33

d)

3

79.

What is the

m\angle U

?

(a)

80.

Find the value of x

(a)

81.

Match the following type of triangle with its picture

a)

1.

acute

b)

2.

right

c)

3.

obtuse

d)

4.

isosceles

e)

5.

equilateral

82.

Isosceles triangles have how many congruent sides and angles?

a)

1

b)

2

c)

3

83.

Equilateral triangles have how many congruent sides and angles?

a)

2

b)

3

c)

4

84.

To classify triangles by the measure of their sides you must use the names:

a)

Equilateral, Equiangular and Obtuse

b)

Equilateral, Isosceles and Scalene

c)

Right triangle, Scalene and Equiangular

d)

Isosceles, Scalene and Equilateral

85.

To classify triangles by tne measure of their angles we use the names:

a)

Equiangular, Isosceles and Acute

b)

Acute, Obtuse and Isosceles

c)

Right triangle, Isosceles triangle and Scalene triangle

d)

Right triangle, Obtuse triangle and Acute triangle

86.

When the triangle has one right angle it is called:

a)

Acute triangle

b)

Obtuse triangle

c)

Right triangle

d)

Scalene triangle

87.

Inside any triangle the sum of all the angles in degrees is always:

a)

360

b)

90

c)

150

d)

180

88.

If you want to draw a triangle you can use the following angle measures:

a)

50, 50 and 50

b)

60, 60, and 60

c)

90, 50 and 50

d)

45, 45 and 45

89.

How many degrees is X?

a)

65

b)

70

c)

90

d)

55

90.

How many degrees is X?

a)

37

b)

47

c)

7

d)

90

91.

What is the value of X?

a)

17

b)

27

c)

37

d)

47

92.

How many triangles in the figure are obuse?

a)

1

b)

2

c)

3

d)

4

93.

How many triangles in the figure are acute?

a)

1

b)

2

c)

3

d)

4

94.

(a)

95.

(a)

96.

(a)

97.

Solve for x THEN find the degrees for angle A.

a)

44^o

b)

96^o

c)

-14^o

d)

63^o

98.

.
.
.
.
What is the name of this kind of triangle?

a)

Right

b)

Isosceles

c)

Scalene

d)

Equilateral

99.

The sides of an equilateral triangle have...

a)

different measures

b)

equal measures

100.

What do the angles in an equilateral triangle measure?

a)

30, 60, 90

b)

60, 60, 60

c)

45, 45, 90

d)

35, 55, 90

101.

Find x

a)

3

b)

4

c)

2

d)

10

102.

What is the length of BC?

a)

6

b)

31

c)

29

d)

11

103.

If triangle ABC is equilateral, what is the perimeter of the triangle.

a)

3

b)

24

c)

72

d)

180

104.

What type of triangle is this?

a)

Equilateral

b)

Isosceles

c)

Scalene

d)

Obtuse

105.

What is always true about an isosceles triangle

a)

At least two sides are congruent

b)

At least two angles are congruent

c)

All of its angles are congruent

d)

All of its sides are congruent

e)

One of the angles is 90 degrees

106.

The roof supports on Randall’s house is in the shape of a triangle, according to the figure below, what are the measures of the base angles of the triangle?

a)

$84\degree$

b)

$48\degree$

c)

$96\degree$

d)

$180\degree$

107.

A slice of pumpkin pie is shaped like an isosceles triangle. If the tip is 24 degrees, how big are the base angles?

a)

$24\degree$

b)

$78\degree$

c)

$156\degree$

d)

$180\degree$

108.

If the $m\angle2=42\degree$ , what is the $m\angle1?$

a)

$42\degree$

b)

$69\degree$

c)

$111\degree$

d)

$180\degree$

109.

If the $m\angle2=80\degree$ , what is the $m\angle1?$

a)

$50\degree$

b)

$80\degree$

c)

$130\degree$

d)

$180\degree$

110.

What is the $m\angle ABC$ ?

a)

$42\degree$

b)

$180\degree$

c)

$9\degree$

d)

$69\degree$

111.

Rhombus QRST is made of two congruent triangles. Given m∠QRS = 34, what is the measure of ∠S?

a)

$34\degree$

b)

$17\degree$

c)

$146\degree$

d)

$180\degree$

112.

a)

72

b)

67

c)

65

d)

54

113.

a)

A

b)

B

c)

C

d)

D

114.

What is the measure of ∠A?

a)

46

b)

134

c)

90

d)

88

115.

What is the measure of BC?

a)

12

b)

6

c)

not enough information

d)

10

116.

What is the measure of ∠S?

a)

not enough information

b)

30

c)

60

d)

180

117.

Find the value of x:

(a)

118.

Find x

a)

90

b)

45

c)

22

d)

35

119.

Solve for the value of X.

X= (a)

120.

Find x

a)

3

b)

4

c)

2

d)

10

121.

Find the value of x.

a)

1

b)

4

c)

5

d)

8

122.

Isosceles triangles have how many congruent sides and angles?

a)

1

b)

2

c)

3

123.

Equilateral triangles have how many congruent sides and angles?

a)

2

b)

3

c)

4

124.

Inside any triangle the sum of all the angles in degrees is always:

a)

360

b)

90

c)

150

d)

180

125.

Solve for y

a)

70

b)

40

c)

140

d)

Not enough information

126.

Find the value of x

(a)

127.

Find the value of x

(a)

128.

What is the measure of ∠S?

a)

60⁰

b)

52⁰

c)

45⁰

d)

36⁰

129.

What is the measure of ∠A?

a)

46

b)

134

c)

90

d)

88

130.

What is the measure of BC?

a)

12

b)

6

c)

not enough information

d)

10

131.

What is the value of x?

a)

16

b)

60

c)

8

d)

not enough information

132.

What is the measure of ∠S?

a)

not enough information

b)

30

c)

60

d)

180

133.

Find x

a)

90

b)

45

c)

22

d)

35

134.

Find x

a)

10

b)

32

c)

116

d)

16

135.

Find x

a)

3

b)

4

c)

2

d)

10

136.

What is the measure of ∠A?

a)

46

b)

134

c)

90

d)

88

137.

What is the measure of ∠T?

a)

4

b)

52

c)

76

d)

25

138.

What is the value of y?

a)

14

b)

98

c)

41

d)

5

139.

What is the length of side JK?

a)

12

b)

30

c)

33

d)

3

140.

What is the value of x?

a)

107

b)

34

c)

112

d)

73

141.

Find the values of m and n.

a)

m = 54, n = 27

b)

m = 27, n = 27

c)

m = 27, n = 36

d)

m = 36, n = 27

142.

Find the length of LM.

a)

4

b)

5

c)

3

d)

6

143.

Find the value of y.

(a)

144.

Find the value of x.

(a)

145.

Find the value of y.

(a)

146.

Find the value of x.

(a)

147.

Find the value of y.

(a)

148.

Find the value of y.

(a)

149.

Find the perimeter of the triangle. ATFQ!

(a)

150.

Find the perimeter of the triangle. ATFQ!

(a)

151.

Find the value of y.

(a)

152.

Find the value of x.

(a)

153.

Find the value of y.

(a)

154.

Find the value of x.

(a)

155.

Find the value of y.

(a)

156.

Find the value of y.

(a)

157.

Find the perimeter of the triangle. ATFQ!

(a)

158.

Find the perimeter of the triangle. ATFQ!

(a)

159.

Find the value of y.

(a)

160.

Find the value of x.

(a)

161.

Find the value of y.

(a)

162.

Find the value of x.

(a)

163.

Find the value of y.

(a)

164.

Find the value of y.

(a)

165.

Find the perimeter of the triangle. ATFQ!

(a)

166.

Find the perimeter of the triangle. ATFQ!

(a)

167.

A triangle that has all three equal sides is a(n)......

a)

Equilateral Triangle

b)

Isosceles Triangle

c)

Scalene Triangle

168.

What type of triangle is this?

a)

Equilateral

b)

Isosceles

c)

Scalene

d)

None

169.

A triangle that has two sides that are the same size is a(n).....

a)

equilateral triangle

b)

isosceles triangle

c)

scalene triangle

d)

none

170.

What type of triangle is this?

a)

Equilateral

b)

Isosceles

c)

Scalene

171.

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.

a)

45°

b)

90°

c)

180°

d)

360°

172.

^{_{What type of triangle is this?}}

a)

Equilateral

b)

Isosceles

c)

Scalene

173.

^{What type of triangle is this?}

a)

Equilateral

b)

Isosceles

c)

Scalene

d)

None

174.

This triangle is ...

a)

scalene

b)

right

c)

obtuse

d)

equilateral

175.

What type of triangle is this?

a)

Isosceles Triangle ( only 2 sides are equal )

b)

Equilateral Triangle ( all 3 ANGLES are equal )

c)

Scalene Triangle ( No sides are the same )

d)

Right Triangle

176.

Use the picture to answer the question.

a)

30

b)

60

c)

15

d)

120

177.

If two sides of a triangle are congruent, then the _________________ opposite those sides are congruent.

a)

sides

b)

vertices

c)

angles

d)

measures

178.

A triangle that has all three equal sides is a(n)......

a)

Equilateral Triangle

b)

Isosceles Triangle

c)

Scalene Triangle

179.

What type of triangle is this?

a)

Equilateral

b)

Isosceles

c)

Scalene

d)

None

180.

A triangle that has two sides that are the same size is a(n).....

a)

equilateral triangle

b)

isosceles triangle

c)

scalene triangle

d)

none

181.

What type of triangle is this?

a)

Equilateral

b)

Isosceles

c)

Scalene

182.

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.

a)

45°

b)

90°

c)

180°

d)

360°

183.

^{_{What type of triangle is this?}}

a)

Equilateral

b)

Isosceles

c)

Scalene

184.

^{What type of triangle is this?}

a)

Equilateral

b)

Isosceles

c)

Scalene

d)

None

185.

This triangle is ...

a)

scalene

b)

right

c)

obtuse

d)

equilateral

186.

What type of triangle is this?

a)

Isosceles Triangle ( only 2 sides are equal )

b)

Equilateral Triangle ( all 3 ANGLES are equal )

c)

Scalene Triangle ( No sides are the same )

d)

Right Triangle

187.

Use the picture to answer the question.

a)

30

b)

60

c)

15

d)

120

188.

If two sides of a triangle are congruent, then the _________________ opposite those sides are congruent.

a)

sides

b)

vertices

c)

angles

d)

measures

189.

Find the measure of each angle indicated.

a)

50

b)

55

c)

60

d)

70

190.

Find the measure of each angle indicated.

a)

50

b)

20

c)

29

d)

48

191.

Find the measure of each angle indicated.

a)

22

b)

25

c)

29

d)

55

192.

Find the measure of each angle indicated.

a)

62

b)

53

c)

71

d)

50

193.

Solve for x.

a)

6

b)

5

c)

-11

d)

4

194.

Solve for x.

a)

7

b)

9

c)

-11

d)

-8

195.

Do the following side lengths form a triangle?
2 inches, 2 inches, 4 inches

a)

Yes

b)

No

196.

Can the following side measures form a triangle?
4 cm, 7 cm, 10 cm

a)

Yes

b)

No

197.

Can the following side measures form a triangle?
3 ft, 5 ft, 8 ft

a)

Yes

b)

No

198.

Does a triangle with these side lengths exist?
15, 12, 9

a)

Yes

b)

No

c)

I don't know.

199.

Does a triangle with these side lengths exist?
20, 10, 9

a)

Yes

b)

No

c)

I don't know.

200.

Does a triangle with these side lengths exist?
11, 28, 16

a)

Yes

b)

No

c)

I don't know.

201.

Does a triangle with these side lengths exist?
18, 22, 5

a)

Yes

b)

No

c)

I don't know.

202.

a)

51

b)

43

c)

60

d)

75

203.

a)

93

b)

71

c)

81

d)

55

204.

a)

41

b)

45

c)

31

d)

98

205.

a)

72

b)

67

c)

65

d)

54

206.

a)

12

b)

11

c)

8

d)

6

207.

a)

6

b)

11

c)

7

d)

12

208.

Find x

a)

60

b)

48

c)

30

d)

28

209.

Find the measure of each angle indicated.

a)

50

b)

55

c)

60

d)

70

210.

Find the measure of each angle indicated.

a)

50

b)

20

c)

29

d)

48

211.

Find the measure of each angle indicated.

a)

22

b)

25

c)

29

d)

55

212.

Find the measure of each angle indicated.

a)

62

b)

53

c)

71

d)

50

213.

Solve for x.

a)

6

b)

5

c)

-11

d)

4

214.

Solve for x.

a)

7

b)

9

c)

-11

d)

-8

215.

Do the following side lengths form a triangle?
2 inches, 2 inches, 4 inches

a)

Yes

b)

No

216.

Can the following side measures form a triangle?
4 cm, 7 cm, 10 cm

a)

Yes

b)

No

217.

Can the following side measures form a triangle?
3 ft, 5 ft, 8 ft

a)

Yes

b)

No

218.

Does a triangle with these side lengths exist?
15, 12, 9

a)

Yes

b)

No

c)

I don't know.

219.

Does a triangle with these side lengths exist?
20, 10, 9

a)

Yes

b)

No

c)

I don't know.

220.

Does a triangle with these side lengths exist?
11, 28, 16

a)

Yes

b)

No

c)

I don't know.

221.

Does a triangle with these side lengths exist?
18, 22, 5

a)

Yes

b)

No

c)

I don't know.

222.

a)

51

b)

43

c)

60

d)

75

223.

a)

93

b)

71

c)

81

d)

55

224.

a)

41

b)

45

c)

31

d)

98

225.

a)

72

b)

67

c)

65

d)

54

226.

a)

12

b)

11

c)

8

d)

6

227.

a)

6

b)

11

c)

7

d)

12

228.

Find x

a)

60

b)

48

c)

30

d)

28

Lesson 4-2 - Equilateral & Isosceles Triangles

Total questions: 228

Worksheet time: 8hrs 24mins

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