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Triangle Review Worksheet - 7th Grade

Total questions: 60

Worksheet time: 1hrs 19mins

Name
Class
Date
1.
.
.
.
.
What is the name of this kind of triangle?
a)
Right
b)
Isosceles
c)
Scalene
d)
Equilateral
2.
.
.
.
.
What is the name of this kind of triangle?
a)
Right
b)
Scalene
c)
Isosceles
d)
Equilateral
3.
.
.
What kind of triangle is this?
a)
Acute
b)
Right
c)
Obtuse
d)
Robot
4.
What kind of triangle is this?
a)
Acute
b)
Super
c)
Right
d)
Obtuse
5.
.
.
.
What is the name of this kind of triangle?
a)
Right
b)
Scalene
c)
Isosceles
d)
Equilateral
6.
What type of triangle is this?
a)
Equilateral
b)
Isosceles
c)
Scalene
d)
Obtuse
7.
How many right angles can a triangle have?
a)
1
b)
2
c)
3
d)
0
8.
Classify this triangle by its sides. 
a)
equilateral
b)
scalene
c)
isosceles
d)
right
9.

Classify this triangle by its sides.

a)

equilateral

b)

scalene

c)

isosceles

10.
Classify this triangle by its angles.
a)
equiangular
b)
acute
c)
obtuse
d)
right
11.
Classify this triangle by its angles.
a)
right
b)
equiangular
c)
acute
d)
obtuse
12.
Classify this triangle by its sides and its angles. 
a)
obtuse scalene
b)
equilateral equiangular
c)
acute right
d)
right isosceles
13.
.
.
.
.
What is the name of this kind of triangle?
a)
Right
b)
Scalene
c)
Isosceles
d)
Equilateral
14.
Which would be the best classification for the triangle shown?
a)
acute isosceles
b)
right scalene
c)
acute scalene
d)
obtuse scalene
15.
Which would be the best classification for the triangle shown?
a)
acute isosceles
b)
equiangular scalene
c)
equiangular isosceles
d)
equiangular equilateral
16.
Which would be the best classification for the triangle shown?
a)
acute isosceles
b)
obtuse scalene
c)
obtuse isosceles
d)
acute scalene
17.
Which would be the best classification for the triangle shown?
a)
right isosceles
b)
obtuse scalene
c)
obtuse isosceles
d)
right scalene
18.
Which would be the best classification for the triangle shown?
a)
right isosceles
b)
obtuse scalene
c)
obtuse isosceles
d)
acute scalene
19.
A triangle has angle measurements of 163°, 2°, and 15°. What kind of triangle is it?

a)
acute triangle
b)
right triangle
c)
obtuse triangle
d)
none of the above
20.
A triangle has angle measurements of 74°, 90°, and 16°. What kind of triangle is it?

a)
acute triangle
b)
right triangle
c)
obtuse triangle
d)
none of the above
21.
A triangle has angle measurements of 27°, 72°, and 81°. What kind of triangle is it?

a)
acute triangle
b)
right triangle
c)
obtuse triangle
d)
none of the above
22.

What side is considered the hypotenuse?

a)

Any side

b)

the side opposite the smallest angle

c)

the side opposite the right angle

d)

the side opposite the shortest leg

23.
The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. 
a)
45°
b)
90°
c)
180°
d)
360°
24.
What type of triangle has only acute angles and no congruent sides?
a)
Right Isosceles Triangle
b)
Obtuse Isosceles Triangle
c)
Right Scalene Triangle
d)
Acute Scalene Triangle
25.
What type of triangle has only one right angle and two congruent sides?
a)
Right Isosceles Triangle
b)
Obtuse Isosceles Triangle
c)
Right Scalene Triangle
d)
Acute Scalene Triangle
26.
Classify the following Triangle
a)
Acute Scalene Triangle
b)
Acute Isosceles Triangle
c)
Right Scalene Triangle
d)
Obtuse Isosceles Triangle
27.
Classifying the following the triangle as many ways as possible. 
a)
Acute, Scalene
b)
Right, Scalene
c)
Obtuse, Scalene
d)
Acute, Isosceles
28.
Classify RST
a)
acute
b)
equiangular
c)
obtuse
d)
right
29.
If a triangle has all angles less than 90° and two equal sides, what type of triangle is it?
a)
Acute Isosceles
b)
Acute Scalene
c)
Obtuse Scalene
d)
Obtuse Isosceles
30.
If a triangle has one angle greater than 90° and no equal sides, what type of triangle is it?
a)
Acute Isosceles
b)
Acute Scalene
c)
Obtuse Scalene
d)
Obtuse Isosceles
31.
If a triangle has one angle exactly 90° and two equal sides, what type of triangle is it?
a)
Right Isosceles
b)
Acute Scalene
c)
Obtuse Scalene
d)
Obtuse Isosceles
32.
If a triangle has all three angles equivalent and all three sides equivalent, what type of triangle is it?
a)
Acute Isosceles
b)
Equilateral
c)
Obtuse Scalene
d)
Obtuse Isosceles
33.
If a triangle has two equal sides, what type of triangle is it?
a)
Isosceles
b)
Right
c)
Obtuse
d)
Scalene
34.
If a triangle has no equal sides, what type of triangle is it?
a)
Scalene
b)
Equilateral
c)
Right 
d)
Obtuse
35.

Which triangle is an equilateral triangle?

a)
b)
c)
36.
a)
A
b)
B
c)
C
d)
D
37.
a)
A
b)
B
c)
C
d)
D
38.
Classify this triangle by its sides and angles. 
a)
obtuse scalene
b)
acute scalene
c)
equilateral equiangular
d)
acute isosceles
39.
Select the letter that represents a right equilateral triangle. 
a)
A
b)
B
c)
C
d)
D
40.
Select the letter that represents a right  obtuse triangle. 
a)
A
b)
B
c)
C
d)
D
41.
Classify this triangle by its sides and angles. 
a)
obtuse scalene
b)
equilateral equiangular
c)
right isosceles
d)
obtuse equilateral
42.
a)
A
b)
B
c)
C
d)
D
43.
a)
A
b)
B
c)
C
d)
D
44.

1) If the longest side of the triangle was 10. Then the two shorter sides must have a sum that is ....?

a)

any length

b)

equal to 10

c)

greater than 10

d)

less than 10

45.

2) Does a triangle with these side lengths exist?

15, 12, 9

a)

Yes

b)

No

c)

I don't know.

46.

3) Can the following side measures form a triangle?

3, 5, 8

a)

Yes

b)

No

47.

4) Which of these lengths CANNOT represent the sides of a triangle?

a)

32, 34, 60

b)

28, 30, 58

c)

13, 20, 27

d)

2, 4, 5

48.

5) Will these three sides form a triangle?

a)

yes

b)

no

49.

6) Will these side lengths form a triangle?

a)

yes

b)

no

50.

8) Which of the following does not represent the lengths of the sides of a triangle?

a)

2 cm, 6 cm, 7 cm

b)

5 cm, 2 cm, 5 cm

c)

5 cm, 5 cm, 8 cm

d)

3 cm, 10 cm, 15 cm

51.

10) Given are the lengths of two sides of a triangle. Find the range of lengths for the third side. 7 mm, 4 mm

a)

more than 3 but less than 11

b)

more than 11 but less than 3

c)

less than 3 but more than 11

52.

9) Given are the lengths of two sides of a triangle. Find the range of lengths for the third side. 7 ft, 13 ft

a)

more than 6 but less than 20

b)

more than 20 but less than 6

c)

less than 6 but more than 20

53.

Which of the following side measures form a triangle?

a)

4, 6, 10

b)

4, 6, 9

c)

4, 6, 11

d)

2, 4, 6

54.

What is the measure of this angle?

a)

160

b)

15

c)

165

d)

175

55.

What is the measure of this angle?

a)

65

b)

66

c)

125

d)

54

56.

Which angle does NOT appear to have a measure of 23°?

a)

b)

c)

d)

57.

Which angle has a measure closest to 30°?

a)

b)

c)

d)

58.

Which angle has a measure closest to 45°?

a)

b)

c)

d)

59.
a)

acute

b)

right

c)

obtuse

d)

none of the above

60.
a)

acute

b)

right

c)

obtuse

d)

none of the above

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