In this question I have been asked to find a and I need to GIVE REASONS for my arguments.
I have no idea how to find a.
Any help is greatly appreciated, thank you!!
I'm sorry again! I read the diagram wrong, I'm only supposed to find a, so the a is the x and I have but b in to show my reasons.
Can I then say:
Extending AB out to F:
b = 180 - 120 (adjacent angles on a straight line)
b = 60
Therefore,
a = 60 (opposite angles of a parallelogram are equal)