Circle Angles Arcs

A ____ is a line, ray, or segment that intersects a circle at two points.

• Tangent

• Secant

• Radius

• Arc

A(n) _____ to a circle is a line, ray or segment in the plane of the circle that intersects the circle in exactly one point.

• tangent

• secant

• radius

• arc

Which is true of a major arc?

• Forms half a circle.

• Forms a whole circle.

• Measures greater than 180 degrees.

• Measures less than 180 degrees.

• x = 160
• x = 40
• x = 80
• x = 360

What is x?

• 15

• 23

• 2

• 92

• A
• B
• C
• D

• A

• B

• C

• D

Find m∠PRQ.

• 39°

• 90°

• 51°

• 15°

What is the measure of angle HKI?

• 72

• 73

• 74

• 75

Find the sizes of the lettered angles in each of these circles

• a = 50, b = 95

• a = 85, b = 130

• a = 95, b = 50

• a = 130, b = 85