Free Printable Angles in a Triangle

1.

Find the measure of the missing angle.

a)

90^o

b)

10⁰

c)

130^o

d)

50^o

2.

Solve for x.

a)

16

b)

11

c)

50

d)

6

3.

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. #18

a)

45°

b)

90°

c)

180°

d)

360°

4.

Solve for x. #6

a)

x = 7

b)

x = 8

c)

x = 6

d)

x = 9

5.

Find the measure of angle A. #2

a)

75^o

b)

60^o

c)

30^o

d)

38^o

6.

What is the measure of angle A in the triangle? #4

a)

116*

b)

25*

c)

62*

d)

54*

7.

Find m ∠B. #10

a)

150°

b)

67°

c)

54°

d)

57°

8.

Solve for x. #13

(a)

9.

Fill in statement #2. #30

a)

$m\angle6+m\angle2+m\angle3+m\angle5=360$

b)

$m\angle1+m\angle4=m\angle6$

c)

$m\angle1+m\angle2+m\angle3=180$

d)

$m\angle1+m\angle4+m\angle7=180$ (This is the correct answer!)

10.

Find the missing angle in the figure.

a)

$50\degree$

b)

$130\degree$

c)

$30\degree$

d)

$80\degree$

11.

Find the missing angle in the figure.

a)

$72\degree$

b)

$53\degree$

c)

$52\degree$

d)

$108\degree$

12.

Use the triangle to solve for x, and then find the measure of angle A.

a)

$5\degree$

b)

$39\degree$

c)

$80\degree$

d)

$41\degree$

13.

Solve for x.

(a)

14.

Find the measure of each angle indicated.

(a)

15.

What should be the value of x, y and z?

a)

x=43°

y=10

z=10

b)

x=43°

y=10

z=5

c)

x=47°

y=10

z=5

d)

x=47°

y=10

z=10

Angles in a Triangle

Total questions: 15

Worksheet time: 47mins

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