POLYGONS

TRIANGLETRIANGLE

Hight

Base

Base

AREA: Base x height

2

A three sided polygon. The sum of all the angles is always 180º.

SQUARESQUAREAREA: leg x leg

Leg

Leg

A four sided polygon having all right angles.

D

d

RHOMBUSRHOMBUS

AREA: D x d2

A four sided polygon having all four sides of equal lenght.

TRAPEZOIDTRAPEZOIDA four sided polygon having one pair of parallel sides. They are called the bases of the trapezoid.

B

b

H

AREA: (B + b) x H2

RECTANGLERECTANGLE

leg

leg

AREA: leg x leg

A four sided polygon having all right angles

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