# Moved to homework area sorry.-kiyoshi7

1. Aug 28, 2013

### kiyoshi7

Moved to homework area sorry.
-kiyoshi7

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Last edited: Aug 28, 2013
2. Aug 29, 2013

### tiny-tim

similarity

Last edited: Aug 29, 2013
3. Aug 29, 2013

### symbolipoint

Study Triangle Similarity and study Supplementary Angles, from the standard high school Geometry course. The triangle problem with the single square relies on supplementary angles where the upper right and left square vertices meet two sides of the larger triangle. You can conclude that all three of the smaller triangles are similar, and so the ratios of their corresponding sides are equal. A proportion can be arranged for the two smaller left & right-hand triangles; and note too that all three of the smaller triangles are RIGHT triangles.