Secants, Tangents, and Angles Answers

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6

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
9

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
11

Circle O is shown. 2 secants intersect at a point outside of the circle to form angle 1. The first arc formed is d, and the second arc formed is b. Arcs a and c are the other 2 arcs outside of the secants.

Question illustration
A
m∠1 = (a – c)
Option A
B
m∠1 = (a + c)
Option B
C
m∠1 = (b – d)
Option C
D
m∠1 = (b + d)
Option D
12

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°
13

A circle is shown. Secant R T and tangent U T intersect at point T outside of the circle to form an angle with a measure of 21 degrees. Secant R T intersects the circle at point S. Arc R U is 119 degrees.

Question illustration
A
49°
B
77°
C
98°
D
161°
14

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°

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