None
A triangle has no parallel sides.
Not all polygon have two pairs of parallel sides. For example, a square will, but not a triangle.
A triangle has no sides parallel to each other.
A triangle.
A right angle triangle has no parallel sides
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None
A triangle has no parallel sides.
An isosceles triangle. It has two pairs of equal sides, which are also not parallel.
A triangle can never have any parallel sides.
Not all polygon have two pairs of parallel sides. For example, a square will, but not a triangle.
A triangle has no sides parallel to each other.
A triangle.
Unless it is a right isosceles triangle, a normal right triangle has no pairs of equal sides.
A parallelogram has 2 pairs of parallel sides.
A right angle triangle has no parallel sides