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Mathematics 23 Online
OpenStudy (allen27):

please help

OpenStudy (allen27):

Prove that a line parallel to one side of a triangle divides the other two sides proportionally. Be sure to create and name the appropriate geometric figures.

OpenStudy (allen27):

please show all work

OpenStudy (slenderman):

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OpenStudy (slenderman):

i dont know the fancy names or anything

OpenStudy (yanasidlinskiy):

They are called: 1. \(\ ∠D≅∠A \) 1. Corresponding angles 2. \(\ ∠B≅∠B \) 2. By reflexive property 3. \(\ △ABC∼△DBE \) 3. By AA similarity

OpenStudy (yanasidlinskiy):

|dw:1467910475708:dw|

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