Free Printable Triangles

Free Printable Worksheets

Worksheets

Triangles

Total questions: 37

Worksheet time: 3hrs 0mins

Name

Class

Date

1.

Complimentary Angles add up to how many degrees?

a)

90 degrees

b)

50 degrees

c)

100 degrees

d)

180 degrees

2.

Supplementary angles add up to how many degrees?

a)

90 degrees

b)

50 degrees

c)

100 degrees

d)

180 degrees

3.

Find the missing angle.

a)

29°

b)

39°

c)

49°

d)

59°

4.

If two of the angles of a triangle are 30 and 70 degrees, the third angle measures...

a)

80

b)

100

c)

60

d)

90

5.

The Pythagorean Theorem is
a² + b³= c⁴

a)

false

b)

true

6.

The Pythagorean Theorem ONLY works on which triangle?

a)

obtuse

b)

scalene

c)

isosceles

d)

right

7.

a)

A

b)

B

c)

C

d)

D

8.

a)

A

b)

B

c)

C

d)

D

9.

a)

A

b)

B

c)

C

d)

D

10.

a)

A

b)

B

c)

C

d)

D

11.

In a triangle, how many total degrees are there?

a)

100%

b)

180 degrees

c)

90 degrees

d)

360 degrees

12.

Identify the type of triangle.

a)

Acute

b)

Right

c)

Obtuse

13.

Identify the type of triangle.

a)

Acute

b)

Right

c)

Obtuse

14.

Identify the type of triangle.

a)

Acute

b)

Right

c)

Obtuse

15.

Identify the type of triangle.

a)

Equilateral

b)

Isoceles

c)

Scalene

16.

Identify the type of triangle.

a)

Equilateral

b)

Isoceles

c)

Scalene

17.

Identify the type of triangle.

a)

Equilateral

b)

Isoceles

c)

Scalene

18.

How are triangles classified?

a)

equal sides and types of angles

b)

number of sides and number of angles

c)

color and size

d)

angles

19.

An EQUILATERAL triangle has ___________.

a)

3 equal sides

b)

4 equal sides

c)

no equal sides

d)

2 equal sides

20.

A SCALENE triangle has _____________.

a)

3 equal sides

b)

4 equal sides

c)

no equal sides

d)

2 equal sides

21.

An ISOSCELES triangle has _____________.

a)

3 equal sides

b)

4 equal sides

c)

no equal sides

d)

2 equal sides

22.

An ACUTE triangle has ________________.

a)

1 acute angle

b)

2 acute angles

c)

3 acute angles

d)

no acute angles

23.

An OBTUSE triangle has _____________.

a)

1 obtuse angle

b)

2 obtuse angles

c)

3 obtuse angles

d)

no obtuse angles

24.

A RIGHT triangle has ___________.

a)

1 right angle

b)

2 right angles

c)

3 right angles

d)

no right angles

25.

What kind of triangle is this?

a)

obtuse scalene

b)

right isosceles

c)

acute equilateral

d)

right scalene

26.

What kind of triangle is this?

a)

right scalene

b)

right isosceles

c)

obtuse scalene

d)

acute isosceles

27.

What kind of triangle is this?

a)

acute equilateral

b)

acute scalene

c)

right isosceles

d)

obtuse equilateral

28.

What kind of triangle is this?

a)

obtuse isosceles

b)

obtuse equilateral

c)

acute scalene

d)

obtuse right

29.

What kind of triangle is this?

a)

obtuse scalene

b)

obtuse isosceles

c)

acute equilateral

d)

right scalene

30.

Two angles whose sum of angle measures equals 90 degrees

a)

Adjacent Angles

b)

Complementary Angles

c)

Congruent Angles

d)

Supplementary Angles

31.

An angle that measures less than 90°

a)

Acute

b)

Obtuse

c)

Right

d)

Straight

32.

Two angles whose sum of angle measures equals 180 degrees

a)

Supplementary Angles

b)

Obtuse Angle

c)

Complementary Angles

d)

Straight Angle

33.

An angle that measures greater than 90° but less than 180°

a)

Right

b)

Straight

c)

Obtuse

d)

Acute

34.

This is what kind of angle?

a)

right

b)

acute

c)

obtuse

d)

straight

35.

This is what kind of angle?

a)

obtuse

b)

right

c)

straight

d)

acute

36.

What type of angle is shown?

a)

acute

b)

obtuse

c)

right

d)

straight

37.

What is the sum of the angles inside a triangle?

a)

90

b)

180

c)

360

100 %

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