Finding Missing Angles of Circles

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

Solve for the missing angle.

• 45^o
• 90^o
• 22.5^o
• 128^o

If the measure of arc ABC = 210°, what is the measure of ∠AOC?

• 150°
• 100°
• 210°
• 105°

What is the measure of ∠PTQ?

• 100°
• 140°
• 180°
• 120°

What is the measure of arc AB?

• 140
• 142
• 180
• 153

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.

Which is true of a minor arc?

• It forms half a circle.
• It forms a whole circle.
• It measures greater than 180 degrees. 
• It measures less than 180 degrees.

A line that intersects the circle at exactly one point (point of tangency).

• tangent

• radius

• circle

• diameter