CUADRILATERALS: They are polygons with four sides and four vertices.

PARALLELOGRAMS: They are equilaterals with two pairs of parallels opposite equal sides and two pairs of opposite equal angles, their diagonals bisect each other.

SQUARE:

Four sides equal

Four angles equal 90 º

Two diagonals.

                                         RECTANGULE:

Four sides equal two by two.

Four angles equal 90 º.

ROMBUS:

Four sides equal.

Four angles two by two.

         

RHOMBOID:

Four sides equal two by two

Four angles equal two by two.

 

TRAPEZIOMS: Only one pair of sides an parallels.

RIGHT TRAPEZIOM:

One angle equal 90º.

Two sides parallels.

ISOCELES TRAPEZIOM

Two sides parallels

Two sides equal.

SCALENE TRAPEZIOM

Two sides parallels

Four sides not equals.

TRAPEZOID

Four sides not equal

Not parallels lines.