Just use your right hand for one plane and your left hand for a second plane.
Intersect our flat right hand with your flat right hand.
They meet in a line.
All points that are in both planes lie on that line.
If more than one plane contains three points A,B, and C, what must be true?
A)AB is perpendicular to BC
B)A,B, and C are noncollinear
C)A,B, and C are collinear
D)AB=BC
1 answer
1 answer