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Learn about the Midsegments of Triangles Theorem, stating that the segment joining midpoints of two sides is parallel and half the length of the third side. Solve for x when D, F, and E are midpoints. Explore examples.
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5-1 Midsegments of triangles GEOMETRY
Theorem 5-1 (Midsegment Thm): The segment that joins the midpoints of two sides of a triangle (midsegment) 1.) is parallel to the third side; 2.) is half as long as the third side.