a pair of intersecting lines that are perpendicular
A pair of infinitely long parallel lines.
A trapezoid
a triangle, pentagon and that's all i can think of * * * * * A right angled triangle has a pair of perpendicular lines! Likewise, a pentagon can have a pair. A circle, ellipse etc do not.
Lines that intersect at 90 degrees are perpendicular lines
A right angle triangle
a right angled triangle
Trapizium
triagle
a pair of intersecting lines that are perpendicular
A pair of infinitely long parallel lines.
A trapezoid
A right trapezoid has exactly one pair of perpendicular lines and is a quadrilateral.
a triangle, pentagon and that's all i can think of * * * * * A right angled triangle has a pair of perpendicular lines! Likewise, a pentagon can have a pair. A circle, ellipse etc do not.
I think it is either a right triangle, square, pentagon, or rectangle.
Lines that intersect at 90 degrees are perpendicular lines
No parallel lines but a right angle triangle has perpendicular lines.