NO !!! A triangle consists of three non-parallel lines.
A right angle triangle has a pair of perpendicular lines that meet each other at 90 degrees.
There can be only one pair of perpendicular lines in an isosceles triangle when it is a right angled isosceles triangle. A non right angled isosceles triangle has no pairs of perpendicular lines.
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.
It has a pair of perpendicular lines that meet at right angles to form the 90 degree angle of a right angle triangle.
A right-angle triangle.
a right angled triangle
I think it is either a right triangle, square, pentagon, or rectangle.
a pair of intersecting lines that are perpendicular
2
a square
1 pair