Answer:
90
Step-by-step explanation:
Top Left: EE
Top Right: EH
Bottem Left: HH
Bottem Right: HE
The conjecture is False. A,B,C are in one plane, D is above the plane, therefore the points are not coplanar.
The statement doesn't specify where the points are.
I would say its C but IM not to sure don’t take me for sure