Question

True or False:
The geometric meaning of the word normal is perpendicular.

Answer 1

False No it’s not perpendicular is two lines that meet at a right angle

Answer 2

A normal is an object such as a line or vector that is perpendicular to a given object. ... If normal is 90 degree to the surface, that means normal is used in 3D. Perpendicular in that case is more in 2D referring two same entities (line-line) with 90 degree angle between them.