Circle Vocabulary

Front

In a circle, the measure of an inscribed angle is ______ the measure of the central angle with the same intercepted arc.

Back

half

Front

A circumscribed angle is an angle that ______.

Back

has its two sides tangent to the circle.

Front

A postulate is ______.

Back

a mathematical statement that is not proven but is considered true.

Front

The distance from the center of a circle to a point on the circle is the ______.

Back

radius.

Front

What does the blue line represent?

Back

secant.

Front

The longest chord in a circle is called the ______.

Back

diameter.

Front

The point where a tangent touches a circle is called the ______.

Back

point of tangency.

Front

The area of a circle is calculated using the formula ______.

Back

A = πr².

Front

The circumference of a circle is calculated using the formula ______.

Back

C = 2πr or C = πd.

Front

A line segment that connects two points on a circle is called a ______.

Back

chord.