Angles in Circles

How many degrees are in a semicircle?

• 90
• 180
• 270
• 360

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

To find an angle on the circle you use which of the following.

• (1/2)arc
• (1/2)(arc+arc)
• (1/2)(arc-arc)
• I don't know

Tags

CCSS.HSG.C.A.2

To find an angle outside the circle you use which of the following.

• (1/2)arc
• (1/2)(arc+arc)
• (1/2)(arc-arc)
• I don't know

An angle whose vertex is the center of a circle is a(n) ______.

• inscribed angle
• acute angle
• obtuse angle
• central angle

Tags

CCSS.HSG.C.A.2

A segment whose endpoints lie on a circle is a _______.

• tangent
• chord
• diameter
• secant

Tags

CCSS.HSG.C.A.2

To find an angle outside the circle you use which of the following.

• (1/2)arc
• (1/2)(arc+arc)
• (1/2)(arc-arc)
• I don't know

Tags

CCSS.HSG.C.A.2

What is the name of the angle pictured?

• Central angle
• Inscribed angle
• Interscribed angle
• Circumscribed angle

Tags

CCSS.HSG.C.A.2

Find the measure of arc AB.

• 17
• 34
• 68
• 146

Tags

CCSS.HSG.C.A.2

Solve for x.

• 140
• 89
• 51
• 38

Tags

CCSS.HSG.C.A.2

Find the measure of angle ABD.

• 14
• 51
• 37
• 65

Tags

CCSS.HSG.C.A.2