Use one of the conditions for similarity of triangles (AA, SSS, or SAS) to prove that a midsegment of a triangle is parallel to a side of the triangle and is half the length of that side.
You have some over one hundred postings.
So, you should understand that this is not a homework service nor is it a tutorial service.
PLease either post some of your own work on this problem or explain what you do not understand about the question.
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