Question

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Answer 1

Am I to assume A=D B=E C=F

Answer 2

180 = (3y) + (6y-12) + m<C

Answer 3

I'm still thinking

Answer 4

@ChmE When given a set of congruent triangle (e.g ABC and DEF), it implies that A=D, B = E and C = F.

Answer 5

I was just dbl checking because I have 1 equation and 2 unknowns right now.

Answer 6

6y-12=3y then solve

Answer 7

@lexiamee I don't think <D and <B are congruent here.

Answer 8

thats the only way I can think to solve

Answer 9

Yeah, it's tempting to make that assumption. I think we need more information.
Is there any other information, @Figureskater120 ? Was there a diagram to go with this?

Answer 10

Seems that way. Might have to assume that m<B = m<D, otherwise, the best you can do is get a range of possible values.

Answer 11

equal them to each other , so :
6y - 12 = 3y
then subtract 3y from 6y, and add 12 to the other side :
6y - 12 = 3y
-3y +12 -3y
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3y = 12
divide 12 by 3
y = 4