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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.
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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
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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.