Answer:
2. G
3. Plane AGH
4. Four planes
Step-by-step explanation:
2. G is the correct answer. Planes ABC and ABI cross intersect at line AB
3. Plane AGH is parallel to the plane containing line EF
4. There are 4 planes perpendicular. Planes DCJ, DCB, BIH, and JIH are all connected to the front plane and are all parallel.
