Circles

Front

What is the term for an angle in a circle with its vertex at the center?

Back

Central angle

Front

What is the measure of minor arc AV if it is given as 55°, 115°, 85°, or 95°?

Back

55°

Front

What is the term for an angle in a circle with its vertex on the circle itself?

Back

Inscribed angle

Front

If x is the measure of an angle in a circle, and the options are 84⁰, 42⁰, 21⁰, or 168⁰, what is the value of x?

Back

42⁰

Front

What do you call a line segment between two points on the circle that passes through the center?

Back

Diameter

Front

What is the distance from the center of a circle to any point on the circle called?

Back

Radius

Front

What is the term for a line that touches a circle at exactly one point?

Back

Tangent

Front

What is the relationship between the central angle and the arc it subtends?

Back

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

Front

If two inscribed angles intercept the same arc, what can be said about their measures?

Back

They are equal.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where r is the radius.