Which statement can be proved true using the given theorem?

Question

happykiddo · Answer

Theorem: A line parallel to one side of a triangle divides the other two proportionately.
 
In the figure below, segment DE is parallel to segment BC and segment EF is parallel to AB.


Segment BF = 16
		Segment BD = 12
		Segment BF = 9
		Segment BD = 4

happykiddo · Answer

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anonymous · Answer

Looks like you need to find BF and BD. Use similar triangles to find the long sides, then subtract FC and DA to figure out the pieces that you need.

happykiddo · Answer

oky doky

anonymous · Answer

Give it a try and ask me any questions that come up.

happykiddo · Answer

so everthing comes out proportional right

anonymous · Answer

By the way, the theorem they stated... that's just a restatement of what we already know about similar triangles.

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Parellel lines means you get similar triangles.

anonymous · Answer

Yup. You just have to set up the right proportions.