CPM Homework Help : CCG Problem 2-33

Looking at the diagram below, John says that $m∠BCF=m∠EFH$ .

An increasing line, A,H, crosses line, B,D, and also crosses line e, g. The Intersection of A,H, & B,D, is labeled, c. The intersection of A,H, & E,G, is labeled f.

Note: This stoplight icon will appear periodically throughout the text. Problems with this icon display common errors that can be made. Be sure not to make the same mistakes yourself!

Do you agree with John? Why or why not?
Hint (a):
These are corresponding angles. Are the lines parallel?
Jim says, “You can’t be sure those angles are equal. An important piece of information is missing from the diagram!” What is Jim talking about?
Hint (b):
Are there any missing marks?