A sphere and a cylinder can roll straight.
Yes. If it is not straight, then it is not a line.
it just a straight line
If it is not straight, then it is not a line.
The word straight does have an antonym, which is crooked. So perhaps a crooked line is the opposite of a straight line.
No.
a cylinder
On a smooth level surface, and with no forces acting on it after the moment of release, it MUST.
A sphere and a cylinder can roll straight.
Yes. If it is not straight, then it is not a line.
You have to have 2 at are school
Displacement of a straight line is zero...
A straight line has no vertex.
it just a straight line
If it is not straight, then it is not a line.
There are 180 degrees on a straight line.
The word straight does have an antonym, which is crooked. So perhaps a crooked line is the opposite of a straight line.