1. POP QUIZ Keystone Geometry

2. D F C O E G BA 1) Name the circle. 2) Name a radius. 3) Name the diameter. 4) Name a chord. 5) Name a tangent. 6) Name a secant. 7) Name a point of tangency.

3. 8) XY is a _______of circle O. 9) XO is a _______of circle O. 10) XY is a _______of circle O. 11) WZ appears to be _______ to circle O. 12) XYZ is _________in circle O. 13) XYZ is a ________ __________ of circle O. Y X O ZW

4. 14) Congruent circles have _____________ radii. 15) A secant of a circle is a(n)____________ that intersects a circle at exactly ______ point(s). 16) Concentric circles have the same ____________.

5. 17) A chord of a circle that passes through the center of that circle. 18) A line that passes through a circle and intersects that circle twice. 19) Circles having the same center point. 20) A polygon whose sides are tangent to the circle.