Never, there are no true "opposite sides" on a triangle as each side intersects the other two at a point. Were two of the lines parallel, the triangle would be missing a point and would not be a closed shape.
If you mean "triangle", a triangle can never have two parallel sides.If you mean "triangle", a triangle can never have two parallel sides.If you mean "triangle", a triangle can never have two parallel sides.If you mean "triangle", a triangle can never have two parallel sides.
No, a triangle will never have parallel sides.
triangle
An isosceles triangle has no parallel sides but it does have two equal sides
It is impossible for a triangle to have any parallel sides. ■
If you mean "triangle", a triangle can never have two parallel sides.If you mean "triangle", a triangle can never have two parallel sides.If you mean "triangle", a triangle can never have two parallel sides.If you mean "triangle", a triangle can never have two parallel sides.
Any polygon with 2n sides (n integer) where opposite sides are parallel, will have its opposite angles congruent.
No, a triangle will never have parallel sides.
triangle
A triangle has no parallel sides.
No triangle has parallel sides but an isosceles triangle has two equal sides of the same lengths.
It is impossible for a triangle to have any parallel sides. ■
An isosceles triangle has no parallel sides but it does have two equal sides
0 Parallel sides
No it has no parallel sides.
A Trapezium (can have two opposite sides parallel)A kite has no parallel opposite sides
No two sides of a triangle can ever be parallel.