triangles similarity, can u check it? thanks! my answer will be circled in the pic!

Question

bookworm14 · Answer

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anonymous · Answer

It looks more like a side to me but it could be an angle. I'm guessing D. It doesn't appear to be an angle in the middle. @Bookworm14  Do you know what the sign on it stands inbetween the sides?

bookworm14 · Answer

@jim_thompson5910  @mathmale

jim_thompson5910 · Answer

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jim_thompson5910 · Answer

to start things off, 

angle BCF = angle GFH

because these angles are vertical angles

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jim_thompson5910 · Answer

also, because BC || GH, we know that 

angle BCF = angle FHG
and
angle CBF = angle FGH

why? because they are alternate interior angles

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