Circles

Front

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

Back

Inscribed angle

Front

What is the measure of angle 2 if it is given as 40°?

Back

40°

Front

What is the measure of angle UST if it is given as 119°?

Back

119°

Front

Solve for x if the angle is given as 38°. What is x?

Back

38°

Front

What is an angle in a circle with vertex at the center of the circle?

Back

Central angle

Front

Define a chord in a circle.

Back

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

Front

What is the relationship between inscribed angles and central angles that subtend the same arc?

Back

The inscribed angle is half the measure of the central angle.

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

What is a tangent to a circle?

Back

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