Please someone help me: Complete the reasons for the proof. Given:
m ∠3 = m ∠4

To Prove:
∠1, ∠2 are supplementary

Reasons:

(1) Given

(2) their 2 non-common sides in 1 ray

(3) definition of supplemental angles

(4) Substitution

(5) Opposite angles are congruent (equal)

(6) Substitution

(7) Definition of supplementary angles

answer: h=5.6 i don't really know how to put into words, so i though i would let you do that. i hope i was able to some

step-by-step explanation:

18 = 6(h)+1/2

18 = 6h+1/2

18-1 = 6h/2

17 = 3h

17/3 = h

h = 5.6