Circle Properties Review

Front

What is a major arc in a circle?

Back

A major arc is an arc that measures more than 180 degrees.

Front

What is a minor arc in a circle?

Back

A minor arc is an arc that measures less than 180 degrees.

Front

What do we call a line segment that connects two points on a circle?

Back

A chord.

Front

What is the diameter of a circle?

Back

The diameter is a chord that passes through the center of the circle, dividing it into two equal halves.

Front

How do you calculate the perimeter of a circle?

Back

The perimeter (circumference) of a circle is calculated using the formula C = 2πr, where r is the radius.

Front

What is the relationship between a tangent and a radius at the point of tangency?

Back

A tangent to a circle is perpendicular to the radius drawn to the point of tangency.

Front

What is the measure of angle formed by two tangents drawn from a point outside the circle?

Back

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

Front

What is the formula for the area of a circle?

Back

The area of a circle is calculated using the formula A = πr², where r is the radius.

Front

What is an inscribed angle?

Back

An inscribed angle is formed by two chords in a circle which have a common endpoint.

Front

How do you find the measure of an inscribed angle?

Back

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