Circle Properties Review

Front

What is a minor arc in a circle?

Back

A minor arc is the shorter arc connecting two points on a circle, measured in degrees.

Front

What is the formula to find the measure of an angle formed by two tangents to a circle?

Back

The measure of the angle formed by two tangents to a circle is equal to half the difference of the measures of the intercepted arcs.

Front

How many chords can be drawn in a circle?

Back

A circle can have an infinite number of chords, as any two points on the circle can define a chord.

Front

What is the relationship between the radius and the diameter of a circle?

Back

The diameter of a circle is twice the length of the radius.

Front

If the radius of a circle is 7 cm, what is the length of the diameter?

Back

The length of the diameter is 14 cm.

Front

What is the measure of a semicircle?

Back

The measure of a semicircle is 180 degrees.

Front

How do you calculate the circumference of a circle?

Back

The circumference of a circle can be calculated using the formula C = 2πr, where r is the radius.

Front

What is the measure of angle x if it intercepts an arc of 80 degrees?

Back

The measure of angle x is 40 degrees.

Front

What is the definition of a tangent line to a circle?

Back

A tangent line to a circle is a straight line that touches the circle at exactly one point.

Front

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

Back

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