Circles Review

Front

What is a circle?

Back

A circle is a round shape where all points are the same distance from the center.

Front

What is the center of a circle?

Back

The center of a circle is the point that is equidistant from all points on the circle.

Front

What is the radius of a circle?

Back

The radius is the distance from the center of the circle to any point on the circle.

Front

What is the diameter of a circle?

Back

The diameter is the distance across the circle through the center, equal to twice the radius.

Front

What is a chord in a circle?

Back

A chord is a line segment whose endpoints lie on the circle.

Front

What is a secant line?

Back

A secant line is a line that intersects a circle at two points.

Front

What is an angle in a circle?

Back

An angle in a circle is formed by two rays that meet at the center of the circle.

Front

What is the measure of a full circle?

Back

The measure of a full circle is 360 degrees.

Front

What is a tangent line?

Back

A tangent line is a line that touches the circle at exactly one point.

Front

What is the formula for the circumference of a circle?

Back

The circumference (C) of a circle is calculated as C = 2πr, where r is the radius.