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Mathematics 9 Online
OpenStudy (anonymous):

Will fan and medal!

OpenStudy (anonymous):

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

OpenStudy (photon336):

Well we can start out with this figure here: have any ideas? |dw:1459533763817:dw|

OpenStudy (anonymous):

I am completely at a loss right now.

OpenStudy (anonymous):

@Photon336

OpenStudy (photon336):

So my guess is that we need to take a triangle and find a way to cut through two sides equally such that the line is parallel to the third side.

OpenStudy (photon336):

|dw:1459534113317:dw|

OpenStudy (anonymous):

Alright I see what you did there

OpenStudy (photon336):

What do you notice about this figure?

OpenStudy (photon336):

does line DE intersect, with side CB?

OpenStudy (anonymous):

No it's parallel

OpenStudy (photon336):

yeah, so that's what I think they were asking. the line cuts through two sides of the triangle and is parallel to the third side.

OpenStudy (anonymous):

Thank youu

OpenStudy (anonymous):

Can I @ you if I need your help again?

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