there is none you dumba55...
There are three straight edges in a triangle.
A triangle has to have straight sides
No.
A triangle must have straight lines.
Not all triangles have to be straight.
There are three straight edges in a triangle.
A straight triangle cannot exist.
A triangle has to have straight sides
No.
A triangle. An equalateral triangle
A right triangle??
A triangle must have straight lines.
Not all triangles have to be straight.
Straight lines.
no
All triangles have straight sides.
No, they cannot be. If they were, they would form a straight line, not a triangle!