perimeter:

4a

area:

2a

a x a

a

a

Rectangle

perimeter:

2b + 2h

area:

b x h

h

b

Rhombus

perimeter:

4a

area:

0,5 x p x q

p

q

a

perimeter:

2b + 2h

area:

b x h

b

h

Trapezoid

perimeter:

a + b + c + d

area:

0,5 x (a + b) x h

c

d

Triangle

perimeter:

3b

area:

o,5 x b x h

b

______________

h

The sum of the areas of the two squares on the legs (a and b) equals the area of the square on the hypotenuse (c).

a2 + b2 = c2