What is perpendiciular?

Answer 1

Perpendicular means two lines, surfaces, or objects that meet at a right angle (90°).

📐 In simple terms:

If one line goes straight across and another goes straight up/down, and they meet like a “+” shape, they are perpendicular.

Here’s the key idea visually:

If

∠

=

90

∘

,

then the lines are perpendicular.

If ∠=90

∘

, then the lines are perpendicular.

🧠 Examples:

The corner of a book or a square has perpendicular sides

The vertical and horizontal axes on a graph (x-axis and y-axis) are perpendicular

📌 Related term:

Parallel lines never meet

Perpendicular lines meet at exactly 90°

Answer 2

Perpendicular refers to the relationship between two lines, segments, or planes that meet at a right angle, which is 90 degrees. In a three-dimensional space, this concept extends to the relationship between lines and planes as well. When two objects are perpendicular, they are oriented in such a way that one object is vertical while the other is horizontal, creating a right angle at their intersection. This property is fundamental in geometry and is often used in various fields, including architecture and engineering.