Use the interactive diagram to answer the following questions.
1. Are points A and B collinear? 2. Are points E and F collinear? 3. Name plane ABD another way. 4. Name plane ABC another way. 5. Are points A, B and D coplanar? 6. Are points A, D and F coplanar? 7. What is the intersection of planes ABD and ABC? 8. What is the intersection of plane ABE and line CD?