Examples of “perpendicular” in a Sentence

adjective Meeting another line or surface at a right angle (90 degrees).

• Draw a line perpendicular to the first one so the two form a square corner.
• Make sure the fence post is perpendicular to the ground before you set the concrete.
• The two roads cross perpendicular to each other.

adjective Standing straight up; exactly vertical.

• The cliff face rises almost perpendicular from the sea.

noun A line or plane set at a right angle to another.

• In geometry class we learned how to construct a perpendicular to a given line.
• The carpenter marked a perpendicular on the board before he made the cut.
• Drop a perpendicular from the top of the triangle to find its height.