Equation of a Circle — Unit test

Question 1

Arc QVT measures 156°.

Revolt · Accepted Answer

Angles QRT and QST both measure 78°.

Question 2

What is the center of a circle represented by the equation (x+9)2+(y−6)2=102?

Revolt · Accepted Answer

(−9,6)

Question 3

Circle B is shown. Line segments C B, D B, and E B are radii. Angle C B E is 52 degrees and angle E B D is 160 degrees.

Revolt · Accepted Answer

212°

Question 4

In circle O, and are diameters. Arc ED measures 17°.

Revolt · Accepted Answer

253°

Question 5

is tangent to circle P at point Q.

Revolt · Accepted Answer

37°

Question 6

Triangle BCD is isosceles and BC ≅ BD.

Revolt · Accepted Answer

130°

Question 7

Angle K measures 67º and angle L measures 119°.

Revolt · Accepted Answer

m = 113o and m = 61o

Question 8

Circle Y is shown. Line segments X Y and Z Y are radii. The length of X Y is 16. Sector X Y Z of the minor angle is shaded.

Revolt · Accepted Answer

96

Question 9

Two chords intersect at a point inside a circle that is not the center of the circle. Which statement must be true?

Revolt · Accepted Answer

The sum of the measures of each pair of vertical angles is equal to the sum of the measures of the intercepted arcs.

Question 10

In circle O, MP is a diameter.

Revolt · Accepted Answer

151°

Equation of a Circle — Unit test Answers