Circle Geometry Concepts

Front

What is the definition of a diameter in a circle?

Back

A diameter is a straight line segment that passes through the center of the circle and connects two points on its circumference.

Front

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

Back

The radius is half the length of the diameter.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where r is the radius.

Front

What is the formula for the area of a circle?

Back

A = πr², where r is the radius.

Front

What does (h,k) represent in the standard form of a circle's equation?

Back

(h,k) is the center of the circle.

Front

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

Back

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

Front

What is the measure of an inscribed angle in relation to the arc it intercepts?

Back

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

Front

What is the definition of a chord in a circle?

Back

A chord is a line segment whose endpoints lie on the circle.

Front

What is the relationship between two congruent angles in a circle?

Back

Two angles are congruent if they have the same measure.

Front

What is the definition of a tangent to a circle?

Back

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