Angles, and Arcs, and Sectors! OH MY!

Here we have a circle centered at the point O. The measure of angle AOB if 56 degrees. What is the measure of angle ACB?

• 28^⁰

• 56⁰

• 98⁰

• 304⁰

Tags

CCSS.HSG.C.A.2

CCSS.HSG.C.A.3

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

Tags

CCSS.HSG.C.A.2

CCSS.HSF.TF.A.1

CCSS.HSG.C.B.5

Chords AC and DB intersect at the point E. Select ALL statements which must be true.

• m∠ADB = m∠ACB

• m∠ADB = m∠CAD

• m∠DEA = m∠CEB

• m∠CAD = m∠CBD

• m∠BCA = m∠CBA

Tags

CCSS.HSG.C.A.2

What is the relationship between this circle and line?

• Tangent

• secant

• chord

• 😶

Tags

CCSS.HSG.C.A.2

CCSS.HSG.C.A.4

An incenter is the point where all of the angle bisectorsof a triangle meet. Which picture shows an incetner?

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Tags

CCSS.HSG.C.A.3

What does inscribed mean?

• a shape inside another

• 😎

• a shape outside another

• SHAPES EVERYWHERE!

Tags

CCSS.HSG.C.A.2

CCSS.HSG.C.A.3

Which figure shows an incircle (circle inscribed in a triangle whose radii are perpendicular to the opposite sides)

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• 

Tags

CCSS.HSG.C.A.3

The common intersection of all 3 perpendicular bisectors of the sides of a triangle is called the circumcenter of a triangle. Which picture shows the circumcenter?

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Tags

CCSS.HSG.C.A.3

CCSS.HSG.CO.D.12