PARALLELOGRAMS AND NO PARALLELOGRAMS

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

Parallelograms: They are cuadrilaterals with two pairs of parallels opposite equal sides and two pairs of opposites equal angles. Their diagonals bisect each other.

Square:

Four sides equal.

Four angles equal 90 º.

Two diagonals.

Rectangle

Four sides equal two by two.

Four angles equal 90 º.

Rhombus

Four sides equal.

Four angles two by two.

Rhomboid

Four sides equal two by two

Four angles equal two by two.

Trapeziums: Only one pair of sides are parallels.

Right trapeziums

One angle equal 90º.

Two sides parallels.

Isosceles trapeziums

Two sides parallels.

Two sides equal.

Scalen trapeziums

Two sides parallels.

Four sides not equal.

Trapezoid

Four sides not equal.

Not parallels lines.