Circles Intro

The distance around a circle is

• Circumference

• Radius

• Center

• Central Angle

The distance across the circle, through its center

• Radius

• Radii

• Circumferene

• Diameter

Tags

CCSS.HSG.C.A.2

The distance from a circle to its center

• Chord

• Central angle

• circumference

• radius

Tags

CCSS.HSG.C.A.2

Half of a circle

• Half circle

• the circle's half

• semicircle

• semihalf

What is the radius of this circle?

• 18 in

• 10 in

• 9 in

• 8 in

Tags

CCSS.7.G.B.4

What is the diameter of this circle?

• 3.5 m

• 3 m

• 5 m

• 7 m

Tags

CCSS.7.G.B.4

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

Is the red line a radius or diameter of the circle?

• Radius
• Diameter

If my radius is 10ft, what is my diameter?

• 20ft
• 5ft
• 31.4ft
• 62.8ft

Tags

CCSS.7.G.B.4

If my diameter is 19 inches, what is my radius?

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

Tags

CCSS.7.G.B.4