Pre-Test

Is a circle 2D?
Yes
No
What is radius?
Distance from any point in the circle to the center. Is the same distance no where the pint is.
Diameter*2
Pi*2
What is diameter?
Double Radius
Distance across the circle.
Half of Radius
Can circumference be greater than area?
No
Yes
What is circumference?
Area
Perimeter
Half of Area
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