Geometry H - Circles Test

Front

What is the definition of a chord in a circle?

Back

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

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

If the circumference of a circle is 22π ft, what is the radius?

Back

The radius is 11 ft.

Front

What is the diameter of a circle?

Back

The diameter is a segment that passes through the center of the circle and has endpoints on the circle.

Front

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

Back

The diameter is twice the length of the radius.

Front

What is a tangent in relation to a circle?

Back

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

Front

What is the area of a circle with a radius of 5 ft?

Back

Area = πr² = π(5)² = 25π ft².

Front

What is the definition of a secant line?

Back

A secant line is a line that intersects a circle at two points.

Front

What is the formula for the area of a circle?

Back

Area = πr², where r is the radius.

Front

If a circle has a radius of 7 cm, what is its diameter?

Back

The diameter is 14 cm.