1. Rectangle :
P = 2(a + b)A = a· b
A = a· b
Script !
2. Carré :
P = 4aA = a2 d = a
A = a2
d = a
3. Losange :
P = 4aA = d1· d2 / 2
A = d1· d2 / 2
4. Parallèlogramme :
P = 2(a + b)A = a· h = a· b sin
A = a· h = a· b sin
5. Trapèze :
(a // c) P = a + b + c + dA = (a + c)· h / 2
A = (a + c)· h / 2
