Angle Measures Inside, Outside, On Circles

Front

What is the measure of a full circle in degrees?

Back

360°

Front

What is the measure of a right angle?

Back

90°

Front

What is the measure of a straight angle?

Back

180°

Front

What is the relationship between the angles formed by two intersecting lines?

Back

The angles are vertical angles and are equal.

Front

What is the formula for finding the measure of an inscribed angle?

Back

The measure of an inscribed angle is half the measure of the intercepted arc.

Front

If two chords intersect inside a circle, how do you find the measure of the angles formed?

Back

The measure of each angle is equal to half the sum of the measures of the arcs intercepted by the angle and its vertical angle.

Front

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

Back

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

Front

What is the measure of an angle formed by a tangent and a chord?

Back

The measure of the angle is half the measure of the intercepted arc.

Front

How do you find the measure of an arc in a circle?

Back

The measure of an arc is equal to the measure of the central angle that subtends the arc.

Front

What is the relationship between the measures of arcs and angles in a circle?

Back

The measure of an angle is related to the measures of the arcs it intercepts.