Circles Test Review

Front

What is a circle?

Back

A circle is a round shape where every point is 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 exactly in the middle, 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, and it is twice the length of the radius.

Front

What does it mean for a line to be tangent to a circle?

Back

A tangent line touches the circle at exactly one point and does not cross into the circle.

Front

What is an arc in a circle?

Back

An arc is a part of the circumference of a circle.

Front

What is the measure of a full circle in degrees?

Back

A full circle measures 360 degrees.

Front

What is a chord in a circle?

Back

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

Front

What is the relationship between the radius and diameter?

Back

The diameter is twice the length of the radius.

Front

What is a sector of a circle?

Back

A sector is a portion of a circle enclosed by two radii and the arc between them.