Theorem: The segment joining the midpoints of two sides of a triangle is parallel to the third side and half its length.

Mathematics

2 answers:

Taya2010 [7]3 years ago

4 0

Answer:

Segment DE is half the length of segment AC. -- Substitution property of equality

Step-by-step explanation:

Here is given a proof for proving line joining mid segment is parallel and half the length of third side.

Stepwise proof is given in two columns

We find that for every line there is a justification as

STatement Justification

D and E coordinates found out MId point formula

DE and BC are measured Distance formula

DE=1/2 BC Substitution property of equality

This justification was missing in the given proof and with this included proof would be complete

Bond [772]3 years ago

4 0

Answer:

substitution property of equality

Step-by-step explanation:

i took the exam and got it right

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