Question

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Answer 1

On number 3, that's wrong. Although they're not in the plane shown, any three points in space define a plane. I think there might be more wrong, but I'm not sure of the exact terminology, so I might be wrong myself. But #3 for sure is true.

Answer 2

Also at the bottom there, 7 has some problems.

See, since AB is half of AC, that means it's twice the distance, so it should be 24, since that's what bisects means, it cuts it into two equal parts.

For the other part of #7, notice that since it's bisected, you know that AD is exactly half of AB, so do you know what you need to do to correct it now?