Posted by Anonymous on Saturday, January 5, 2008 at 10:45am.
multiply base times height
Area of a triangle:
Area=(base * height)/2
Area of a trapezoid:
Area=height * (b1 + b2)/2
where:
b1=length of top side
b2=length of bottom side
Quiddithch is correct. The trapezoid's height is the distance between the two parallel sides, b1 and b2. For a triangle, you can choose any side for the base, but must measure the height from that chosen base when using the formula.
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