Develop and use the area formula for a right triangle by comparing with the formula for a rectangle (e.g., two of the same right triangles makes a rectangle). <br /> <br /> <img src="http://emed.nucenter.org:8171/2011-05-13/4.2d+Develop_use+area+formula+for+right+triangle-posterimage.png" alt="http://emed.nucenter.org:8171/2011-05-13/4.2d+Develop_use+area+formula+for+right+triangle.m4v" height="320" class="aligncenter posterimg" width="480" />

Develop and use the area formula for a right triangle by comparing with the formula for a rectangle (e.g., two of the same right triangles makes a rectangle).

Develop and use the area formula for a right triangle by comparing with the formula for a rectangle (e.g., two of the same right triangles makes a rectangle). <br> <br> 

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4.2d Develop/use area formula for right triangle

4.2d Develop/use area formula for right triangle

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