Pretend you are framing a house. How can you be sure that two roof trusses are the same size and shape? Be specific and refer to a congruence shortcut.

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anonymous · Answer

You can make sure that two roof trusses are the same size by measuring both the rise and the run of each truss. If they are, then by rules of congruency, you have two triangles of the same dimensions. So if you have a triangle, that has equal dimensions on both sides. Then the two triangles are congruent due to SAS. Then on the other truss you measure so that the rise and run are exactly the same then construct the same triangle.|dw:1360921029914:dw|