
Since ABCD is a parallelogram, segment BC is parallel to segment AD according to the definition of a parallelogram.
By the same token, segment AB is parallel to segment DC according to the definition of a parallelogram.
Line AC is a transversal for segment BC and segment AD. This transversal creates alternate interior angles 1 and 4 which are equal as shown below.
By the same token, Line AC is a transversal for segment AB and segment DC. This transversal creates alternate interior angles 2 and 3 which are equal.
Moreover, segment AC ≅ segment AC by reflexive property.Summary
Mar 19, 18 05:53 PM
Triangle midsegment theorem proof using coordinate geometry and algebra
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Mar 19, 18 05:53 PM
Triangle midsegment theorem proof using coordinate geometry and algebra
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