Question

Given: In ∆ABC, .
Prove: \[\frac{ BD }{ BA}=\frac{ BE }{ BC }\]

http://learn.flvs.net/webdav/assessment_images/educator_geometry_v14/pool_Geom_3641_1002_05/image0104e98408d.gif

The 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.



Complete the proof by entering the correct statements and reasons.

Answer 1

I think 6 is Corresponding Parts of Similar Triangles

Answer 2

But I have no idea what would go in 3. ?

Answer 3

I'm trying to prove \[\frac{ BD }{ BA }=\frac{ BE }{ BC }\]