Flashcard over arcs, angles, and segments in circles

Front

What is a minor arc in a circle?

Back

A minor arc is the shorter arc connecting two points on a circle, measuring less than 180 degrees.

Front

What is the formula for finding the measure of an angle formed by two intersecting chords in a circle?

Back

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

Front

How do you find the measure of a major arc?

Back

The measure of a major arc can be found by subtracting the measure of the minor arc from 360 degrees.

Front

What is the relationship between the angles formed by two secants intersecting outside a circle?

Back

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

Front

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

Back

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

Front

Define a tangent line in relation to a circle.

Back

A tangent line is a straight line that touches the circle at exactly one point and does not cross into the circle.

Front

What is the formula for finding the measure of an interior angle formed by two intersecting chords?

Back

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

Front

How do you calculate the measure of an angle formed by two tangents from a point outside the circle?

Back

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

Front

What is the measure of a semicircle?

Back

The measure of a semicircle is always 180 degrees.

Front

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

Back

The measure of an angle formed by two chords or secants is related to the measures of the arcs they intercept.