Circle Angle and Arc Measures

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.

What is the part of the circle highlighted in red called?

• semi-circle arc

• major arc

• minor arc

• sector

What is the part of the circle highlighted in red called?

• semi-circle arc

• major arc

• minor arc

• sector

A ____ angle is an angle whose vertex is a the center of a circle.

• supplementary

• complimentary

• central

• obtuse

Alison is jogging on a circular track that has a radius of 140 feet.  She runs along the track from point R to point N, a distance of 230 feet. Find to the nearest degree, the measure of minor arc RN.

• 47

• 74

• 94

• 123

• 25 

• 21 

•  7

• 29 

Here we have a circle with radius 1 centered at the point O. The arc length of arc AB is π/3. What is the measure of angle ACB?

• π/6 radians

• π/3 radians

• π/2 radians

• π/8 radians

Find the measure of arc RT.

Alison is jogging on a circular track that has a radius of 140 feet. She runs along the track from point R to point N, a distance of 230 feet. Find to the nearest degree, the measure of minor arc RN.

• 47

• 74

• 94

• 123

Find the measure of arc DC