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Q: Why is the formula for area of a triangle and area of a trapezoid are what they are?

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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

Area of a trapezoid = 0.5*(sum of parallel sides)*height

Area of a trapezoid: 0.5*(sum of its parallel sides)*height

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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

A trapezoid has 2 inner triangles and so work out the area of each triangle then add them together. Alternatively use the formula for area of a trapezoid which is:- 0.5*(sum of parallel sides)*height

Rectangle Area of parallelogram = Base * Height Area of rectangle = Base * Height

Area of a trapezoid = 0.5*(sum of parallel sides)*height

the formula for the area of a square or rectangle is length times height the formula for the area of a circle is pi times radius squared the formula for the area of a triangle is half base times height the formula for the area of a trapezoid is 1/2(top + bottom) times height

from a pyramid

Area of a trapezoid = 0.5*(sum of parallel sides)*height

No. A trapezoid is not a triangle at all

A trapezoid and a triangle can make a triangle or another trapezoid, among others.

Area of a trapezoid = 0.5*(sum of parallel sides)*height

Area of a trapezoid: 0.5*(sum of its parallel sides)*height

A trapezoid and a triangle make a paralellogram.

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