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What does the term perpendicular lines mean?
Perpendicular lines are two lines that intersect to form four right angles.
What do right angles mean in maths?
right angles are perpendicular lines that intercept each other at right angles which is 90 degrees
What does the word perpendiculer mean?
Perpendicular means 'at right angles to'.
What is does pendicular mean in maths?
Perpendicular, or "normal", means that two lines meet at right angles. The two lines cross in such a way that they form 4 equal angles between them.If you work with coordinates, the product of the slopes of two perpendicular lines are minus 1. For example, if a certain line has a slope of 2, another line, perpendicular to it, will have a slope of -1/2.
Do perpendicular lines ever meet at right angles?
Whether perpendicular lines meet at right angles depends on what they are perpendicular to. Perpendicular is a relational word; this is perpendicular to that.When a pair of lines are perpendicular to each other, they are properly called "mutually perpendicular". Many people (including mathematicians) say just "two perpendicular lines" when they really mean mutually perpendicular, if it is clear from the context that that is what is meant.However, there exists at least one teacher, at least one of whom is a mathematician, who will on at least one occasion attempt to catch out at least one of his students by leading that student to make an assumption the validity of which has not been rigorously proved.This often happens when a teacher is trying to show his pupils the art of rigor in mathematical proof. (The previous paragraph is to give you some idea of what a rigorous proof looks like.)Just to formally answer the question, mutually perpendicular lines on a plane always meet at right-angles - that's what perpendicular means.
