trapezoid base 1: base 2: height: rectangle length: height:

Area of Trapezoids

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Page 1: Trapezoid Base 1: Base 2: Height: Rectangle Length: Height:

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?

Page 4: Trapezoid Base 1: Base 2: Height: Rectangle Length: Height:

http://www.mathplayground.com/howto_area_trapezoid.html

http://learnzillion.com/lessons/1060-find-the-area-of-a-trapezoid-by-composing-a-parallelogram

http://www.mathplayground.com/howto_area_trapezoid.html

http://learnzillion.com/lessons/1060-find-the-area-of-a-trapezoid-by-composing-a-parallelogram

Page 5: Trapezoid Base 1: Base 2: Height: Rectangle Length: Height:

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

Page 6: Trapezoid Base 1: Base 2: Height: Rectangle Length: Height:

Remember…

Use the order of operations.

The bases MUST be added before multiplying by ½ of the height.

Page 7: Trapezoid Base 1: Base 2: Height: Rectangle Length: 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)

Page 8: Trapezoid Base 1: Base 2: Height: Rectangle Length: Height:

Find the areaA = h(b1 + b2)

14 m

6 m

8 m

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