Chapter 10 Part 1 Unit TEST: Circles Answers

Circle O is shown. Chords K M and J L intersect at point A. The measure of arc K J is 170 degrees. The measure of arc L M is 80 degrees.

Circle G and X connect at point Y. The length of G Y is 10 centimeters and the length of Y X is 16 centimeters.

Circle O has a circumference of 36π cm.

Line segment KL is tangent to circle J at point K.

Circle L is shown. Line segments K L and M L are radii. The length of K L is 12. Angle M L K is 60 degrees. Sector M L K with a 60 degree angle is shaded.

Consider circle Y with radius 3 m and central angle XYZ measuring 70°.

Circle D is shown. Angle A C B intercepts arc A B. Arc A B has a measure of 76 degrees.

A circle is shown. Secant A D and tangent E D intersect at point D outside of the circle. Secant A D intersects the circle at point B. The length of A B is a, the length of B D is 10, and the length of D E is 12.

A circle is shown. Secants D E and A E intersect at point E outside of the circle. Secant D E intersects the circle at point C and secant A E intersects the circle at point B. The length of D C is 1, the length of C E is x + 4, the length of A B is 11, and the length of B E is x + 1.

Circle C is shown. Radius A has a length of r.

Circle A is shown. Secant W Y intersects tangent Z Y at point Y outside of the circle. Secant W Y intersects circle A at point X. Arc X Z is 105 degrees and arc W Z is 175 degrees.

Circle D is inscribed with triangle A B C. The measure of arc A B is 76 degrees. Point E is on the circle between points B and C.

In circle T, ∠PTQ ≅ ∠RTS.

In circle O, and are diameters. The measure of arc AB is 55° and the measure of arc CD is 25°.

Circle T is shown. Angle Q S R intercepts arc Q R. Angle Q S R is 52 degrees.

Line segments XY and ZY are tangent to circle O.

In circle D, ∠EDH ≅ ∠EDG.

Which is true regarding secants and chords?

Given: Circle M with inscribed and congruent radii JM and MLProve: m =

How are the semicircle and the diameter of a circle related?