AnswersKY-Geometry B-CRSecants, Tangents, and Angles (Sec 10-5)

Secants, Tangents, and Angles Answers

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Circle O is shown. Tangents X Z and Y Z intersect at point Z outside of the circle. The first arc formed is arc b, and the second arc formed is arc a.

Question illustration
A
m∠XZY = (a + b)
Option A
B
m∠XZY = (a – b)
Option B
C
m∠XOY = (a + b)
Option C
D
m∠XOY = (a – b)
Option D
2
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Circle P is shown. Tangents R S and T S intersect at point S outside of the circle to form angle x. The first arc formed is arc y, and the second arc formed is arc z.

Question illustration
A
The sum of y and z must be 2x.
B
The sum of y and z must be x.
Option B
C
The difference of z and y must be 2x.
D
The difference of z and y must be x.
Option D
3

Circle C is shown. Secants A D and D J intersects at point D outside of the circle. Secant A D intersects the circle at point B and secant D J intersects the circle at point E. Angle D is 37 degrees and the measure of arc B E is 38 degrees. Secants A G and J G intersect at point G outside of the circle. Secant A G intersects the circle at point F and secant J G intersects the circle at point H. Angle G is 32 degrees.

Question illustration
A
31°
B
48°
C
112°
D
121°
4

Circle X is shown in the diagram.

Question illustration
A
m∠1 = (a – b)
Option A
B
m∠1 = (a + b)
Option B
C
m∠1 = (c – d)
Option C
D
m∠1 = (c + d)
Option D
5

Circle Q is shown. Secant L N and tangent P N intersect at point N outside of the circle. Secant L N intersects the circle at point M. Arc M P is y, arc L P is x, and arc M L is z.

Question illustration
A
m∠MNP = (x – y)
Option A
B
m∠MNP = (x + y)
Option B
C
m∠MNP = (z + y)
Option C
D
m∠MNP = (z – y)
Option D
6

A secant and a tangent meet at a 90° angle outside the circle. What must be the difference between the measures of the intercepted arcs?

A
45°
B
90°
C
180°
D
270°
7

Circle O is shown. Secants C A and C E intersect at point C outside of the circle to form an angle with measure 36 degrees. Secant C A intersects the circle at point B, and secant C E intersects the circle at point D. Arc B D is 48 degrees.

Question illustration
A
84°
B
96°
C
120°
D
168°

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