Quadrilaterals Worksheet With Answers

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Quadrilaterals
Definition
A quadrilateral is a four-sided closed
figure in a plane that meets the following
conditions:
• Each side has its endpoints in
common with an endpoint of two
adjacent sides.
• Consecutive sides do not lie in a
straight line.
In this unit, we will investigate the properties of a special group of quadrilaterals called
parallelograms. A definition of a parallelogram is given below.
Parallelogram
A quadrilateral with two pairs of
opposite sides parallel is a
parallelogram.
Any side of a parallelogram can be designated as the base as shown in the figure below.
The altitude is the perpendicular segment joining any point on the opposite side with the
base or base extended.
altitude
altitude
base

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