Circles Half Circles Semi Circles Quarter Circles

What is a Semicircle

• A square

• Pineapple

• Half of a circle or circumference that is cut off in the middle.

• A quarter of a circle

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

• Radius

• Diameter

What is a Chord

• The line between one half and the other

• The segment between to points on a circle

What do we call the red line?

• Chord

• Arc

• Diameter

• Segment

Match the following

• Chord

• Semi Circle

• Point of Tangency

• Central Angle

• Secant

An arc is...

• A line that passes through the center and goes from edge to edge.

• A part of the circumference.

• A boat.

• A line that touches the circle once.

What is the part of the circle highlighted in red called?

• semi-circle arc

• major arc

• minor arc

• sector

What is the circumference of a circle with a radius of 4cm?

• 12.56cm

• 25.12cm

• 50.24cm

• 6.28cm

Tags

CCSS.7.G.B.4

What is the area of a circle with a diameter of 20m?

• 1256m²

• 125.6m²

• 62.8m²

• 314m²

Tags

CCSS.7.G.B.4

What is the circumference of a circle with a diameter of 10cm?

• 31.4cm

• 31.4m

• 314cm

• 314cm²

Tags

CCSS.7.G.B.4