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Quadrangles
(Quadralaterals)
A
quadrangle (quadrilateral) is a polygon with
·
4 sides
·
4 angles
·
4 vertices
Parallelograms:
A
parallelogram is a quadrangle with 2 pairs of
parallel lines.
(Lines are parallel if they are everywhere the same
distance apart.)
Here are some figures that are not parallelograms:
Quadrangles
that are Parallelograms:
|
Rectangle
A rectangle has
four right angles. The sides do not have to
be the same length. |
Rhombus
A rhombus 4
sides that are the same length. The angles
of a rhombus are usually not right angles,
but they may be. |
Square
A square has 4
right angles. All 4 sides are the same
length. All squares are rectangles. All
squares are rhombuses. |
Quadrangles
that are not Parallelograms:
|
Trapezoid
Only 1 pair of
parallel sides.
|
Kite
The equal sides
are next to each other. The 4 sides cannot
have the same length. |
Other
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