In Mathematics, a perpendicular is defined as a straight line that makes the right angle (90 degrees) with the other line. In other words, if two lines intersect each other at the right angle, then the lines are perpendicular to each other.
lines that lie in the same plane and never intersect, maintaining a constant distance apart
In geometry, a transversal is a line that passes through two lines in the same plane at two distinct points.
Triangles can be classified according to their angles or their types of sides. Based on their sides, the 3 triangles are classified as equilateral triangles, isosceles triangles, and scalene triangles. Based on their angles, the 3 types of triangles are listed as, acute triangle, obtuse triangle, and right-angled triangle.