Identify Parts of the Circle

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.

Select the names of major arcs of Circle O.

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Which segment is not a radius?

• CA

• CB

• CD

• LM

Select the names of minor arcs of Circle O.

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Identify the center of the circle.

• A

• B

• There is no center labeled

If D is the center, check all of the radii of the circle

• AD

• AC

• BD

• CD

• BA

P is the center so RQ would be the_____

Click on all the true statements about the diameter of a circle.

• The diameter goes the full way across the circle through the center.

• To find the diameter divide the radius by 2

• To calculate the diameter multiply the radius by 2

• The diameter goes half way across the circle

Name the pictured part of the circle.

• Radius

• Central Angle

• Diameter

• Center

• Arc

Identify the parts: Center

• E

• EF

• H

• G

• IH