Working with
 Segments in Circles

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Answer the following questions dealing with
the Segments in Circles.

(Do not assume that diagrams are drawn to scale.)
 

1.

Given:  circle with two chords as marked

Find x.

          
Choose:

2
6
8
10

 

 

2.

Given:  circle with diameter perpendicular to chord

Find x.

Choose:

  4
  5
  8

 

 

3.

Given:  circle with two secants

Find x.

Choose:

10
15
20
28

 

 

4.

Given:  circle with two secants

Find x.

Choose:

17.5
30
35.2
40

 

 

5.

Given:  circle with two secants

Find x.

Choose:

4.8
6
7
7.5

 

 

6.

Given:  circle with tangent and secant

Find x.

Choose:

1
4
8
9

 

 

7.

Given:  circle with two chords as marked

Find x.

Choose:

1
2
3
4

 

 

8.

Given:  circle with tangent and secant

Find x.

Choose:

4


 

 

9.


Hint:  Find y first.

Given:  circle with tangent, secant and chord

Find x.

Choose:




 

 

10.

 
Hint:  Find y first.

Given:  circle with two tangents and a secant

Find x.

Choose:

4
6
8
12

 

 

 

11.


Diagram not to scale.

Given:  circle with secants and chords such that
           LM = 7
           MN = 8
           TN = 10
           PR = 3
           RM = 6
           LT = 11

Find:  PT,  PN,  LR,  RT

Answer


 

 

12.

In a circle, diameter is extended through B to an external point P.  Tangent is drawn to point C on the circle.  If the radius of the circle is 15, and BP = 2, find PC.
 

Answer

 


 

13. In circle O, diameter is perpendicular to chord at E.  If CD = 20, BE = 2 and AE = 4x - 2, find the length of the diameter.
 

Answer

 


 

14. In the accompanying diagram, and are tangent to the indicated circle.  From his pasture gate, a horse sees the barn and the farm pond.  The angle formed between his line of sight of the barn and his line of sight of the pond is 30 degrees.  How many degrees are in angle HAY?
           

Answer

 


 

15.

On a dare, Ellen attempts to throw darts while wearing a blindfold.  She throws four darts.  Three of the darts land on the farthest outer edge of the circular dartboard and the fourth dart sticks in the wall.  When measured, it is found that darts labeled D, A and R are collinear, TR = 8 inches, AR = 4 inches and that TR is tangent to the dartboard at T.  How many inches are between dart D and dart A?

                      

Answer

 


 

16.
Mrs. Smith wants to purchase a cover for their new circular pool.  She needs to know the radius of the pool, but she does not want to get wet to take the measurements.  She is standing 4 feet from the pool and 12 feet from the point of tangency.  Find the radius of the pool.
                      

Answer

 


 

17.

In circle O, is tangent to the circle at point A.  Place point B anywhere on between P and A.  Draw , and
Prove that is NOT perpendicular to .

                       

Answer