Geometry- Circles

Front

A tangent is a line that _______.

Back

intersects the circle at one point.

Front

What is the measure of arc AYB?

Back

260 degrees.

Front

How big is angle b?

Back

60 degrees.

Front

What is the measure of angle HKI?

Back

73 degrees.

Front

Solve for a: If 3a + 2 = 20, what is a?

Back

6.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where r is the radius.

Front

What is the area of a circle?

Back

A = πr², where r is the radius.

Front

Define a chord in a circle.

Back

A chord is a line segment with both endpoints on the circle.

Front

What is a diameter?

Back

A diameter is a chord that passes through the center of the circle.

Front

What is the relationship between the radius and diameter?

Back

The diameter is twice the length of the radius.