Circle Measurement

If you are given the diameter, how can you calculate the radius?

• Multiply the diameter by 2

• Divide the diameter by 2

• Add 2 to the diameter

• Subtract 2 from the diameter

What is does x equal?

Mathematical Equivalence

ON

What is the measure of the missing angle in degrees?

Mathematical Equivalence

ON

Find the measure of arc AB.

Mathematical Equivalence

ON

Solve for the missing angle.

Mathematical Equivalence

ON

In a circle (or congruent circles), the measure of an arc is:

• equal to twice the measure of its corresponding inscribed angle

• equal to the measure of its corresponding inscribed angle

• 120 degrees

• 180 degrees

• 60 degrees

• 360 degrees

The angle marked with 110 is​ a (a)  

• Central Angle

• Inscribed Angle

What is the measure of the arc

Mathematical Equivalence

ON

What is the measure of the Central Angle just below the 110 Central Angle?

Mathematical Equivalence

OFF