A right angle triangle has no parallel sides
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A right triangle has zero pairs of parallel sides. In a right triangle, one angle is 90 degrees, and the other two angles are acute (less than 90 degrees). As a result, the sides of a right triangle do not run parallel to each other, as they intersect at various angles within the triangle.
An isosceles triangle. It has two pairs of equal sides, which are also not parallel.
An isosceles triangle has no parallel sides but it does have 2 sides of equal lengths
Well, honey, an isosceles triangle has two sides that are equal in length, but that doesn't mean they're parallel. In fact, the only time an isosceles triangle would have two pairs of parallel sides is if it magically transformed into a parallelogram overnight. So, no, an isosceles triangle does not have two pairs of parallel sides.
A triangle has no parallel sides but in the form of a right angle triangle it has perpendicular lines that meet at right angles which is 90 degrees.
A Rhombus had 2 pairs of parallel sides and has NO right angles. :)