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Geometry Basics

TermDefinition
Perimeter distance around a shape (add all sides)
Area square units in a shape (space inside a shape)
Formula area of triangle A=1/2bh
Formula area of rectangle A=lw
radius distance from center of circle to edge
diameter distance across circle through the center
circumference distance around a circle
Formula area of a circle A=π times radius squared
Formula circumference of a circle C= π times diameter
If r=6 then d=? 12
If d=8 then r=? 4
Created by: tboysen
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