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Introduction
A simple introduction to parallelograms, a four-sided figure with two sets of parallel lines.
Properties of Parallelograms
This covers a few concepts about parallelograms.
Proving Parallelograms
By knowing a few angles and sides, one can determine
if a figure is a parallelogram.
Parallel Lines
Other ways of proving figures to be parallelograms
Special Parallelograms
There are many special parallelograms:
the square, rectangle...