Which shape does NOT have perpendicular

perpendicular lines? Mark your answer.

Perpendicular lines are lines that cross one another at a 90° angle. They have slopes that are opposite reciprocals of one another. Unlike parallel lines that never touch, perpendicular lines must intersect.

Therefore, the shape with 2 lines that don't intersect/touch each other, is the shape that does not have perpendicular lines.

Riangles have perpendicular sides, rectangles have both perpendicular and parallel sides, but other quadrilaterals might not.