79 - Central Angle Review

Front

What is a central angle?

Back

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

Front

What is an intercepted arc?

Back

An intercepted arc is the portion of a circle that lies between the two points where the sides of an angle intersect the circle.

Front

How do you find the measure of a central angle?

Back

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

Front

What is the relationship between a central angle and its intercepted arc?

Back

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

Front

If the measure of arc ST is 21°, what is the measure of the central angle that intercepts arc ST?

Back

The measure of the central angle that intercepts arc ST is also 21°.

Front

What is the formula to calculate the measure of an angle formed by two chords that intersect inside a circle?

Back

The measure of the angle is equal to half the sum of the measures of the intercepted arcs.

Front

If angle PTQ measures 140°, what is the measure of the intercepted arc?

Back

The measure of the intercepted arc is also 140°.

Front

What is the measure of an angle formed by two secants that intersect outside a circle?

Back

The measure of the angle is equal to half the difference of the measures of the intercepted arcs.

Front

If angle XTY measures 65°, what is the measure of the intercepted arc?

Back

The measure of the intercepted arc is also 65°.

Front

What is the relationship between inscribed angles and intercepted arcs?

Back

An inscribed angle is half the measure of the intercepted arc.