Parts of a Circle

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. It is often denoted by a letter, such as 'K'.

Front

What is a chord in a circle?

Back

Front

What is a central angle?

Back

Front

What is a secant?

Back

Front

What is a tangent?

Back

A tangent is a line that touches the circle at exactly one point, known as the point of tangency.

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 a chord that passes through the center of the circle and is twice the length of the radius.

Front

What is the circumference of a circle?

Back

Front

What is the area of a circle?

Back

Front

What is an arc in a circle?

Back

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