Yes, it's possible because...
No, it's impossible because..
You can look at a circle from it's side, it would appear as a line.
Well it's only theoretical that a circle can be a straight line but we can always guess
Curved lines can be straight if they are straightened
no matter what a circle is a bent line, you cannot stack straight lines and get a circle, stacking bent lines may though.
A circle can not be turned into a straight line the line is curved and can't be straight
lol triangle.128k, that is silly, it may look like a line but it is still a circle. Plus, if the shape was a sphere from all viewpoints it will look like a circle.
Mathematics has the answer to this one. A circle is defined as being a shape with points that are all equidistant to a fixed point, called a point. A line can be defined as slope 0, but clearly, the slope isn't 0 at any point. If we grab a straight line, find a fixed point, we can clearly see that all points aren't equidistant to the fixed point. Another idea is that a line is like a double ray, with two points being stretched off in 2 directions in 1 dimension infinitely. Since a circle is 2 dimensional, it can't be considered a line as a line is one dimensional.