Circle Rules Geometry

Which of the following names a diameter?

• segment AC

• segment DB

• segment AB

• segment BC

A line that intersects a circle at exactly one point

• secant

• circle

• chord

• tangent

Which best describes line AB?

• chord

• secant

• tangent

• diameter

What best describes segment AB?

• chord

• secant

• tangent

• diameter

Determine y.

• 30

• 60

• 90

• 180

Knowing that Angle B is 30.0 degrees, what is the measure of angle DEB?

Knowing that line AF is a tangent, C is the center of the circle, and angle F is 29.0 degrees, what is the measure of angle ECD?

Line ST is a tangent to the circle at point P. What is the measure of angle (x + y)?

• 79

• 80

• 86

• 90

Find a.

• 30

• 21

• 60

• 120

Calculate q.

• 40

• 140

• 128

• 52