Answer:
I think that it's 12 but I don't know for sure.
Step-by-step explanation:
9xy = 3x . 3y
2xyz = 2x . y . z
4x . 4y = 16xy
You can factor this by grouping.
A and C are similar
The sum of a triangles angles = 180
If you calculate the remaining angles, you will see that both A and C have the same angles and therefore are similar.
