triagle
I think it is either a right triangle, square, pentagon, or rectangle.
A plus sign (+) would be a pair of perpendicular line segments.
The lines that meet at right angles are perpendicular to each other.
Some intersecting lines are perpendicular lines.Take any old pair of intersecting lines. If the angles at the intersectionhappen to be 90 degree angles, then the lines are perpendicular lines.
A right angle triangle
A right-angle 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.