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If is equilateral and if and , then what do you know about the coordinates of vertex ? Justify your solution in detail.

Notice the position of the third vertex for both triangles. They both have an -coordinate of .

Use the patterns you learned for special right triangles to find the height of the congruent equilateral triangles.

Use the eTool below to create your equilateral triangles.
Click the link at right for the full version of the eTool: 12-62 HW eTool