find the area of a triangle whose vertices have coordinates (-4,5), (-4,-2) and (2,5)

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Earl -The first step to solve this problem is to simply sketch a picture on graph paper to see what the triangle looks like.  Here is what it looks like:Can you see that this is a right triangle with a base equal to 6 and a height equal to 7? Great!Now simply use the formula for the area of a triangle:A = 1/2(base)(height)Hope that helps