Geometry: Parallelograms

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A parallelogram is a quadrilateral (polygon with four straight sides) with opposite sides parallel. The typical parallelogram is shown in Figure below along with other types of quadrilaterals.
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A rectangle, a rhombus, a square are all parallelograms. They are special kinds of parallelograms. The bottom picture shows a trapezoid, a kite, and a general quadrilateral that are NOT parallelograms, just for example.

Lessons under this topic consider different types of parallelograms and their properties.

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