Circles (12/02/24)

Front

What is a Minor Arc?

Back

A Minor Arc is an arc of a circle that is smaller than a semicircle, measuring less than 180 degrees.

Front

What is a Major Arc?

Back

A Major Arc is an arc of a circle that is larger than a semicircle, measuring more than 180 degrees.

Front

What is a Semi-Circle?

Back

A Semi-Circle is an arc that represents half of a circle, measuring exactly 180 degrees.

Front

What is a Central Angle?

Back

A Central Angle is an angle whose vertex is at the center of the circle and whose sides are radii that intersect the circle.

Front

What is a Radius?

Back

A Radius is a line segment from the center of a circle to any point on the circle.

Front

What is a Diameter?

Back

A Diameter is a line segment that passes through the center of the circle and has its endpoints on the circle, measuring twice the length of the radius.

Front

What is a Chord?

Back

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

Front

How do you find the measure of an arc?

Back

The measure of an arc can be found using the central angle that subtends the arc. The measure of the arc is equal to the measure of the central angle.

Front

What is the relationship between a Central Angle and its intercepted Arc?

Back

The measure of the intercepted arc is equal to the measure of the central angle.

Front

If the Central Angle is 130 degrees, what is the measure of the intercepted arc?

Back

The measure of the intercepted arc is also 130 degrees.