answer:
what is your question that you ask
step-by-step explanation:
let m = monomial
let t = trinomial
so, m times t = t.
monomial times a trinomial = another trinomial.
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