A trapezoid is a 4 sided quadrilateral with 1 pair of opposite parallel sides of different lengths.
Its perimeter is the sum of its 4 sides.
Its area is: 0.5*(sum of parallel sides)*height
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To construct a trapezoid you will need a quadrilateral with one pair of parallel sides.
Area of a trapezoid = 0.5*(sum of parallel sides)*height
The formula for the area of a trapezoid is A = 1/2 (b1 + b2)/h where b1 is the upper base of the trapezoid , b2 is the lower base of the trapezoid and h is the height of the trapezoid. Since a triangle has only one base , replace either b1 or b2 with zero. Thus the area of a triangle is A = 1/2bh
from a pyramid
Area of a trapezoid = 0.5*(sum of parallel sides)*height
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