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Thales's Theorem and Circle Vocabulary

Total questions: 22

Worksheet time: 6hrs 30mins

Name
Class
Date
1.

Find m∠PRQ.

a)

39

b)

90

c)

51

d)

15

2.

What is m∠LMO?

a)

90

b)

30

c)

80

d)

45

3.

If  m∠CBD is 34°  , what is the measure of  ∠BAC  ?

a)

112

b)

68

c)

56

d)

34

4.

This is a picture of ___________.

a)

Minor Arc

b)

Semi Circle

c)

Major Arc

d)

Central Angle

5.

This is a picture of ___________.

a)

Minor Arc

b)

Semi- circle

c)

Major Arc

d)

Central Angle

6.

This is a picture of ___________.

a)

Chord

b)

Radius

c)

Diameter

d)

Circumference

7.

This is a picture of ___________.

a)

Minor Arc

b)

Major Arc

c)

Central Angle

d)

Inscribed Angle

8.

Find the measure of b.

a)

180

b)

70

c)

56

d)

90

9.

True or False? The triangle is an isosceles triangle

a)

True

b)

False

10.

True or False? The triangle is an isosceles triangle

a)

True

b)

False

11.

Why do two radii form an isosceles triangle?

a)

2 radii form 2 equal sides of a triangle

b)

all sides are the same length

c)

all triangles in a circle are isosceles

12.

What is the central angle?

a)

30 degrees

b)

60 degrees

c)

120 degrees

13.

A circle has a diameter of 10 cm. What are the lengths of the two equal sides of the isosceles triangle inside the circle?

a)

10 cm

b)

5 cm

c)

10 degrees

14.

What type of triangle do two radii of a circle make?

a)

Equilateral

b)

Isosceles

c)

Scalene

15.

True or False? Angle A is equal to angle B in the triangle

a)

True

b)

False

16.

What is the missing angle θ in the triangle?

a)

25 degrees

b)

65 degrees

c)

Can't say

17.

What is the missing angle θ in the triangle?

a)

25

b)

65

c)

130

18.

What is the missing angle θ in the triangle?

a)

25 degrees

b)

40 degrees

c)

50 degrees

19.

What is the missing angle θ in the triangle?

a)

50

b)

80

c)

90

20.

Which of the following statements is true?

a)

OA is longer than OB

b)

OA is the same length as OB

c)

OA is shorter than OB

21.

Which of the following statements is true?

a)

OA is longer than OB

b)

OA is the same length as OB

c)

OA is shorter than OB

22.

What is the missing angle θ in the triangle?

a)

30 degrees

b)

40 degrees

c)

50 degrees