Radius- Is the edge to the middle of the Radius- Is the edge to the middle of the circle.circle.

Diameter- It goes throw the whole center of Diameter- It goes throw the whole center of the circle.the circle.

Chord- starts at the edge and ends Chord- starts at the edge and ends at the edge.at the edge.

Central angle- is an angle is Central angle- is an angle is forming in the center.forming in the center.

Inscribed angle- It forms at the edge of a Inscribed angle- It forms at the edge of a circle.circle.

Tangent- Is that the line only lines up ar one Tangent- Is that the line only lines up ar one point.point.

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

Intercepted arc

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

Area of a circleArea of a circle

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

CircumferenceCircumference

The distance around a circleThe distance around a circle

All the areas of circlesAll the areas of circles

Radius, diameter, chord, central angle, Radius, diameter, chord, central angle, inscribed angle, tangent, secant, and inscribed angle, tangent, secant, and intercepted arcintercepted arc