Inscribed and Circumscribed Circle

To inscribe a square inside a circle, first you must draw a diameter anywhere across the circle. What should your next step be?

• Construct a perpendicular bisector

• Draw a second diameter to the circle

• Construct a line tangent to the circle

• Set your compass the length of the radius.

Name the construction.

• circumscribed triangle

• equilateral triangle inscribed in a circle

• inscribed scalene triangle

• inscribed hexagon

Which of the following best describes the construction?

• Ray OC trisects angle BOA.

• Ray OC is parallel to ray OA.

• Ray OC is parallel to both rays OA and OB.

• Ray OC bisects angle BOA.

What is the tool being used called?

• Compass

• Circle creator

• Pencil swingy-thing

• Arc maker

A circumscribed angle has its vertex ____________ the circle

• at the center of

• on

• outside

• inside

An inscribed angle has its vertex __________ the circle

• at the center of

• on

• outside

• inside

A circumscribed angle is ________ its intercepted arc.

• equal to

• half the measure of

• supplementary to

• not related to

Find the measure of the indicated angle.

• 60°

• 120°

• 30°

• 90°

Find the measure of the indicated angle.

• 60°

• 120°

• 30°

• 90°

Find the measure of the indicated angle.

• 45°

• 90°

• 60°

• 135°