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Polygon
A closed shape made of 3 or more straight lines
Triangle
3 sides
Quadrilateral
4 sides
Trapezoid
1 pair of parallel sides
Parallelogram
2 pairs of parallel sides opposite sides same length
Rhombus
4 equal sides
Rectangle
4 right angles
Square
4 right angles and 4 equal sides
Rules to remember
Some quadrilaterals are squares All rhombuses are parallelograms No trapezoids are parallelograms All squares are rectangles
Quick tip
Square perfect one Rectangle right angles Rhombus equal sides Parallelogram opposite sides equal Trapezoid one pair parallel
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Polygons 9 26 25