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Worksheets

Triangles Review

Total questions: 17

Worksheet time: 46mins

Name
Class
Date
1.

Classify this triangle by its sides.

a)

Equilateral

b)

Scalene

c)

Isoscleles

d)

Obtuse

2.

Find the value of x.

a)

7.67

b)

8.83

c)

10.42

d)

5.98

3.

Find the value of the missing angle (x).

a)

41

b)

129

c)

49

d)

51

4.

Find the measure of ∠FDC.

a)

138

b)

140

c)

90

d)

85

5.

Classify this triangle by its sides.

a)

Equilateral

b)

Right

c)

Isosceles

d)

Scalene

6.

Find the value of the missing angle (?).

a)

57

b)

74

c)

82

d)

50

7.

Find the value of x.

a)

12

b)

84

c)

42

d)

19

8.

Classify this triangle by its sides.

a)

Equilateral

b)

Scalene

c)

Right

d)

Isosceles

9.

Find the measure of ∠BCA.

a)

11

b)

17

c)

28

d)

12

10.

Is it possible to construct a triangle with the given side lengths?

3, 5, 7

a)

Yes

b)

No

11.

Find the value of x.

a)

37

b)

24

c)

48

d)

96

12.

Find the measure of ∠DEF.

a)

63

b)

77

c)

117

d)

67

13.

Using the picture above, determine which angle is the smallest.

a)

∠BCA

b)

∠CBA

c)

∠BAC

14.

Which can be a possible length of the third side of a triangle given the two lengths of the other two sides. Click ALL that apply.

4cm & 7cm

a)

5

b)

28

c)

8

d)

12

e)

2

15.

List the sides from largest to smallest.

a)

BC∠AC∠AB

b)

AB∠BC∠AC

c)

AC∠BC∠AB

16.

Is it possible to construct a triangle with the given side lengths?

9, 11, 23

a)

No

b)

Yes

17.

Using the picture above, list the angles in order from smallest to largest.

a)

∠A, ∠B, ∠C

b)

∠B, ∠A, ∠C

c)

∠C, ∠A, ∠B

d)

∠B∠C∠A