No
None because no triangle has any parallel sides.
None but all three sides are equal in length.
10000000000
There are absolutely 0 parallel lines in any given triangle.
Any odd-sided shape.
In a regular nonagon no two sides are parallel.
You mean lines or sides? But,octagon has parallel lines. Um, four parallel lines.
a square
If you meant a shape then it could be a square or a rhombus
It can only be none other than a trapezoid.
Scalene Triangle- a triangle with no congruent sides Isosceles Triangle- a triangle with two congruent sides Equilateral Triangle- a triangle with three congruent sides
A triangle can have only three sides. No triangle can have 9 sides!