Mathematics, 29.01.2020 08:43, dmorinville8

Theorem: the segment joining the midpoints of two sides of a triangle is parallel to the third side and half its length.
a two-column proof of the theorem is shown, but the proof is incomplete.

which of the following completes the proof?

a. by the addition property
b. by the distance formula
c. by construction
d. given

Theorem: the segment joining the midpoints of two sides of a triangle is parallel to the third side

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Theorem: the segment joining the midpoints of two sides of a triangle is parallel to the third side...