Two planes may intersect, be parallel, or coincide .
If two planes intersect, then the set of common points is a line that lies in both planes. Two parallel planes can not intersect.
The intersection of two planes that do not coincide (if it exists) is always a line.
If an intersection of the planes does not exist, the planes are said to be parallel.
Answer:
the scientific name is the same name around the world and if you use common names they are different around the world
Step-by-step explanation:
1. false 2. true 3. true 4.false
Step-by-step explanation:
