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3 Cards in this Set

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Area of a trapezium = 1/2 (a+b)h

Copy original trapezium so there are two identical. They then fit together inverted to create a PARALLELOGRAM. The area of the PARALLELOGRAM is equal to [height] × [a] from the trapezium + [b] from the trapezium. The answer is then half of a the parraleogram.

Substitute into the formula

Base times height

Gg

Triangle is 1/2 base x height