MY LAST 2 QUESTION WILL FOREVER BE GRATEFUL PLS HELP WILL GIVE BRANLIEST PLS I AM BEGGING!!! 1. Which statement can be made based on the diagram below? IMAGE BELOW
A) m∠1 + m∠2 = 180
B) m∠2 + m∠3 = 180
C) ∠2= ∠3
D) ∠3=∠4

4. What is the difference between a formal and informal proof?

A) A formal proof provides the reasons for steps, whereas an informal proof does not.

B) A formal proof uses a table or a list of steps, whereas an informal proof uses paragraphs.
C) A formal proof is much shorter, whereas an informal proof is longer.

D) A formal proof uses equations, whereas an informal proof only uses text.