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| Math Central | Quandaries & Queries |
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Question from Mike, a student: How do I find the area of a quadrilateral that has one sloped side? |
Hi Mike,
Is this the shape you have?
Are angles BAD and CDA right angles and do you know the lengths of the sides? If so then draw a line from B, perpendicular to AB and meeting CD at E.
The quadrilateral is now composed of a rectangle with dimensions |AB| and |DA|, and a right triangle with base |CD| - |AB| and height |DA|.
I hope this helps,
Penny
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