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Perimeter and Surface Area Formulas


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Trapezoid Perimeter and Surface Area Formulas


Todd Helmenstine
A trapezoid is another special quadrangle where only two sides are parallel to each other.
The perpendicular distance between the two parallel sides is called the height ( h ).

Perimeter = a + b1 + b2 + c
Area = ½( b1 + b2 ) x h

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