Question

in the cube shown below, which planes intersect?
ade and bcf efg and abc abe and abc abe and cdg

Explanation:

Step1: Analyze plane pairs

Check if each pair shares a line/edge (intersection).

• ADE & BCF: Parallel (no intersection).
• EFG & ABC: EFG is not a full plane; ABC is a base (no overlap).
• ABE & ABC: Share edge AB (intersect).
• ABE & CDG: Parallel (no intersection).

Answer:

ABE and ABC