User:Minesweeper.007/Formula Chart

Shape	Perimeter	Area
Triangle	S + S + S	½ B • H
Rectangle	2 • L + 2 • H	L • W
Square	4 • S	S²
Parallellogram	2 • L + 2 • H	B • H
Trapezoid	S + S + S + S	½ H • B1 • B2
Circle	${\pi }$ • D	${\pi }$ • R²