Geometry Chapter 10 Circles

What type of arc is exactly equal to 180˚?

• Major Arc

• Minor Arc

• Central Arc

• Semicircle

What do you call a segment that has one endpoint on the circle and the other at the center of the circle?

• Radius

• Diameter

• Chord

• Tangent

What do you call a line that intersects a circle exactly once?

• Tangent

• Secant

• Radius

• Diameter

What do you call an angle whose vertex is on the circle?

• Intercepted Arc

• Inscribed Angle

• Right Angle

• Central Angle

Find the value of x.

• 9

• 64

• 225

• 15

Find the measure of Angle R.

• 50˚

• 100˚

• 60˚

• 120˚

Find the values of x, y, and z.

• x = 82˚, y = 82˚, z = 93˚

• x = 98˚, y = 82˚, z = 93˚

• x = 82˚, y = 98˚, z = 87˚

• x = 82˚, y = 98˚, z = 93˚

Write the equation of a circle with a center at (-4, 6) and diameter of 10.

• (x-4)²+ (y+6)² = 100

• (x+4)²+ (y-6)² = 25

• (x+4)²+ (y-6)² = 100

• (x-4)²+ (y+6)² = 25

Find the length of EF.

• 2

• 6

• 12

• 3

What is the arc length of minor arc AB?

• 5.23
• 103
• 33.33
• 50