2
None
There are absolutely 0 parallel lines in any given triangle.
A triangle has no sides parallel to each other.
2 pairs of parllel sides
a triangle has no parrallel lines. it will only be parrallel if it is a quadrilateral
A square has two pairs of opposite parallel lines whereas a triangle has none.
2
None
ZERO!
There can be only one pair of perpendicular lines in an isosceles triangle when it is a right angled isosceles triangle. A non right angled isosceles triangle has no pairs of perpendicular lines.
There are absolutely 0 parallel lines in any given triangle.
None
A triangle can never have any parallel sides.
A triangle has no sides parallel to each other.
2 pairs of parllel sides
One. There's actually two...