Will mark as
what is the missing step in the given proof?
a.
statement: m∠4 = m∠15
reason: substitution property of equality
b.
statement: m∠4 + m∠8 = 180°
reason: definition of supplementary angles
c.
statement: m∠4 = m∠16
reason: transitive property of equality
d.
statement: ∠15 and ∠8 are supplementary.
reason: transitive property of equality

C.

Step-by-step explanation:

The box below differs from the box to its left in that m∠16 has been replaced by m∠4. It tells you that the substitution property lets you do this. Then the missing box must show that m∠4 and m∠16 are the same. Only answer choice C does that.

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.