Question 996174: Given: AB=CD
Prove: AC=BD
Answer by farohw(175)   (Show Source):
You can put this solution on YOUR website! Suppose A, B, C, D are points on a line in this order.
AB = CD given
BC = BC reflexive property of segments
AC = AB + BC, BD = CD + BC segment addition postulate
AB + BC = BC + CD addition property of equality
Therefore, AC = BD by substitution
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