Question

Geometry; two column proof

Helpp!
I’ve been stuck on this question on my test for a while, we barely learned this material.
Are my answers correct? If not what is wrong and right? What do I put to fix it?

Answer 1

1) Given

2) Definition of Midpoint

4) Substitution PoE

5) 4x=16

6) Divison PoE

Explanation:

1) is given because it is given.

2) Should be definition of midpoint because a midpoint bisects a line, meaning both sides are congruent.

4) is substitution because, like aforementioned, AC=6x and CD=2x+16, so substitute those numbers in the equation.

5) is 4x=16 because that's what happens when you subtract 6x-2x.

6) should be division PoE because to isolate x you need to divide by 4.