In the figure below, the segment is parallel to one side of the triangle.
Which of the following is not a true statement?

12/x = 10/15
12/x = y/20
10/25 = y/20

@bibby

Question

In the figure below, the segment is parallel to one side of the triangle.
Which of the following is not a true statement?

12/x = 10/15
12/x = y/20
10/25 = y/20

@bibby

anonymous · Answer

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anonymous · Answer

I figured it out.  It's "B".

anonymous · Answer

12/X = Y/20.   That is the incorrect answer.

bibby · Answer

why?

anonymous · Answer

10/25 = y/20 is a possible answer.
12/x = 10/15 is also a possible answer (I don't quite understand why.)
.

I'm looking for the one that is wrong.  Which is "B"

bibby · Answer

I know, I'm just trying to help you out.in general you should always ask yourself why something is the case

anonymous · Answer

I figured that is what you're asking.  I didn't direct the answer at you.

bibby · Answer

well, let's break up the triangle into 2 pieces again

bibby · Answer

|dw:1423258216435:dw|
fill in the relevant side lengths

bibby · Answer

|dw:1423258258981:dw|