Introduction Difference Method for Finding Area

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Introduction Difference Method for Finding Area
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When students have not yet developed the distance formula on the Cartesian plane, finding the area of a triangle whose does not have two endpoints with the same respective x-value or y-value is difficult.

Here we introduce the difference method for finding area where we construct a rectangle around that triangle and then compute the triangle's area by taking the difference between the rectangle and the right triangles constructed around the triangle whose area we seek.
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1
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Teaching Duration
30 Minutes

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Introduction Difference Method for Finding Area