Intro to Circles

Front

What is an arc in a circle?

Back

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

Front

What is a minor arc?

Back

A minor arc is an arc that is smaller than a semicircle.

Front

What is a major arc?

Back

A major arc is an arc that is larger than a semicircle.

Front

What is a diameter?

Back

A diameter is a chord that passes through the center of the circle, dividing it into two equal halves.

Front

What is a radius?

Back

A radius is the distance from the center of the circle to any point on its boundary.

Front

How many degrees are in a full circle?

Back

360 degrees.

Front

How many degrees are in a semicircle?

Back

180 degrees.

Front

What is a chord?

Back

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

Front

What is an inscribed angle?

Back

An inscribed angle is formed by two chords in a circle which have a common endpoint.

Front

What is the relationship between the diameter and radius?

Back

The diameter is twice the length of the radius.