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Mathematics 21 Online
OpenStudy (dontknowdontcare):

Hey guys fan and medal In ΔABC shown below, segment DE is parallel to segment AC:

OpenStudy (dontknowdontcare):

OpenStudy (dontknowdontcare):

The following two-column proof with missing statements and reasons proves that if a line parallel to one side of a triangle also intersects the other two sides, the line divides the sides proportionally:

jhonyy9 (jhonyy9):

so just write the proportionality of sides BE BD DE --- = --- = --- BC BA AC

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