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Worksheets

Tangents and Circumscribed Angles

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

What is the measure of ∠BDC?

a)

64°

b)

128°

c)

32°

d)

116°

2.

What is the measure of ∠BFE?

a)

180°

b)

90°

c)

45°

d)

360°

3.

What is the measure of ∠EBC?

a)

90°

b)

64°

c)

32°

d)

58°

4.

What is the measure of ∠ABG?

a)

90°

b)

124°

c)

62°

d)

56°

5.

Point O is the center of each circle. Assume the lines that appear to be tangent are tangent. What is the value of the variable?

a)

26

b)

57

c)

66

d)

114

6.

Solve for x.

a)

29

b)

33

c)

41.5

d)

50

7.

What is the measure of ∠BGC?

a)

90°

b)

124°

c)

62°

d)

56°

8.

Find the value of x that ensures the segment that appears tangent, is in fact tangent, to circle C.

a)

x = 14.4

b)

x = 8.9

c)

x = 16

d)

x = 8

9.

Find x. P is the center of the circle. Segments that appear to be tangent are tangent.

a)

11.2

b)

18.0

c)

25.0

d)

30.0

10.

In the figure, PA and PB are the tangents to a circle of center 'O'. ∠AOB= 120° then ∠APB =

a)

600

b)

300

c)

1200

d)

750

11.

Is line AB tangent to the circle?

 Hint: Use  c2=a2+b2c^2=a^2+b^2   and remember (8+12) is our c.

a)

YES

b)

NO

c)

Can't Tell

12.

Using lines tangent to the circle, find the value of x.

a)

57

b)

137

c)

47

d)

257

13.

Find the radius r.

a)

2

b)

3

c)

4

d)

5

14.

QS is a tangent to circle P. Find QS.

a)

144

b)

14

c)

12

d)

13

15.

Using the tangent lines, find the value of x.

a)

60

b)

120

c)

30

d)

300

16.

Find the value of x.

a)

105

b)

65

c)

45

d)

25

17.

Determine if a tangent line is shown in the picture.

a)

Yes

b)

No

c)

Not sure

18.

Using the tangent lines, find the value of x.

a)

60

b)

120

c)

30

d)

300

19.

Solve for "?"

a)

70

b)

220

c)

110

d)

55

20.

Find x.  Assume that segments that appear to be   tangent are tangent.

a)

2

b)

11

c)

7.6

d)

9