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Quadrilaterals are polygons with four sides. Interior Angles
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Inside angles add up to 360o.
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Inside angles add up to 360o.
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Inside angles add up to 360o.
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Exterior Angles
The exterior (outside) angles of ALL quadrilaterals (and all other polygons) add up to 360o as well!
a + b + c + d = 360o
Types of Quadrilaterals
Here are six types of quadrilaterals with special features.
Click on each one to find out more:
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