trapezoid base 1: base 2: height: rectangle length: height:
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Area of Trapezoids
Find the dimensions
TrapezoidBase 1:Base 2:Height:
RectangleLength:Height:
What is the relationship between the measures of the rectangle and the measures of the trapezoid?
http://www.mathplayground.com/howto_area_trapezoid.html
http://learnzillion.com/lessons/1060-find-the-area-of-a-trapezoid-by-composing-a-parallelogram
Area of a Trapezoid
The area A of a trapezoid is one half the product of the height h and the sum of the bases b1 & b2.
A = ½h(b1 + b2) b1
b2
h
Remember…
Use the order of operations.
The bases MUST be added before multiplying by ½ of the height.
Find the area of the trapezoid
5 in.
7 in.
12 in.
The bases are 5 inches and 12 inches. The height is 7 inches.
A = h(b1 + b2)
Find the areaA = h(b1 + b2)
14 m
6 m
8 m
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