Geometric Formulas - Perimeter and Areas

Figure	Perimeter	Area
Square	4 * S	S * S

Rectangle	2(L + H)	L * H

Trapezoid	If both diagonals are equal B - b c = ------- 2 /------- P = 2(c + H + \/(c² + H²)) + 2(b + H)	1 --- H (B + b) 2

Parallelogram		If both diagonals are equal B * H