Review Circles Geometry

What is the equation of a circle whose center is at (4,5) and whose radius is 6

• (x+4)² + (y+5)² = 6

• (x-4)² + (y-5)² = 36

• (x+4)² + (y+5)² = 36

• (x-4)² + (y-5)² = 6

Find the measure of arc AB.

• 17
• 34
• 68
• 146

Solve for the missing angle.

• 45^o
• 90^o
• 22.5^o
• 128^o

• A
• B
• C
• D

In the diagram, two tangents to the circle share a common external point. Solve for the value of "x"

• 8
• 9
• 6
• 5

• 10
• 15
• 12
• 19

Find the arc length.  Leave your answer in terms of π.

• 7/4π
• 7/2π
• 1/8π
• 45π

Find the area of each sector.

• 52.4 in²
• 18,864 in²
• 60 in2
• 10.47 in

• A

• B

• C

• D

What is m∠ACB?

• 67.5°
• 90°
• 22.5°
• 45°