2. Radius- Is the edge to the middle of the circle. Diameter- It goes throw the whole center of the circle.

3. Chord- starts at the edge and ends at the edge. Central angle- is an angle is forming in the center.

4. Inscribed angle- It forms at the edge of a circle. Inscribed angle- It forms at the edge of a circle. Tangent- Is that the line only lines up ar one point. Tangent- Is that the line only lines up ar one point.

5. Secant- Is the only goes thought the circle twice.

6. Intercepted arc Intercepted arc- It forms a arc at the top of an inscribed angle.

7. Area of a circle The area A of a circle is equal to 3.14 times the square of a radius R. The area A of a circle is equal to 3.14 times the square of a radius R.

8. Circumference The distance around a circle

9. All the areas of circles Radius, diameter, chord, central angle, inscribed angle, tangent, secant, and intercepted arc Radius, diameter, chord, central angle, inscribed angle, tangent, secant, and intercepted arc