HW 3 Problem 5

I know that for this problem I need to draw a triangle DEF that is similar to ABC, but I am trying to figure out... Do I draw DEF inside ABC (like the problem on the quiz this week)? Or do I put it at one of the vertices? I'm just not sure how to make the leap from knowing the sides are proportional to finding an angle is congruent, etc.



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Basic linear algebra uncovers and clarifies very important geometry and algebra.

Dr. Paul Garrett