Please help.i dont understand at all plzz...​

is this part of a question or something

the answer is 11.2 (i know i’m late)

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true