Circles: Chords, Tangents & Equations

Fill in the blank:
Line m is tangent to circle C because it is _____________ to  $\overline{CD}$  at D.

• parallel

• perpendicular

• congruent

• touching exactly once

If CE = 125 and CD = 44, Find DE.

Line AC  is tangent to Circle O at point C.
Find AC.

Line AC is tangent to Circle O at C.

Find AB.

If the radius of circle Q is 5 and PR = 12, Find PQ.

Find AC. (Do not include units.)

Find the radius of the circle. If necessary, round to the nearest tenth.

• 11.4

• 14

• 18

• 5.7

Find RS.

• 24

• 12

• 13

• 26

• (2,5)

• (-2, 5)

• (2, -5)

• (-2,-5)