2
Arrow heads on lines usually signifies parallel lines
A square has 2 pairs of opposite parallel lines.
There cannot be parallel lines in any [plane] triangles.
A triangular prism has 9 parallel lines
there are 2 sets of parallel lines in a square
This depends on how the double arrow is drawn. Most of the lines if not all will be parallel.
2. actually, none, the lines are intersecting
To indicate that a pair of lines are parallel you mark them both with an arrow. If there is another pair of parallel lines on the same shape you mark those with a double arrow.
Arrow heads on lines usually signifies parallel lines
A triangle can have no parallel lines.
A pentagon has no parallel lines.
it has too parallel lines!
A cone does not have any parallel lines
how many sets of parallel lines are in a triangle
A square has 2 pairs of opposite parallel lines.
2 pairs of parallel lines
A cube has exactly 6 parallel lines.