perpendicular angle
nounUK /ˌpɜː.pənˈdɪk.jə.lər ˈæŋ.ɡəl/
US /ˌpɝː.pənˈdɪk.jə.lɚ ˈæŋ.ɡəl/
A perpendicular angle is a square corner where two lines meet straight up and across, like the corner of a book.
The two walls meet at a perpendicular angle, making a perfect corner.
RELATED WORDS
OTHER MEANINGS
2. An angle formed by two lines that meet at exactly ninety degrees.
The carpenter checked that the shelf formed a perpendicular angle with the wall.
3. A right angle in geometry, often marked with a small square symbol.
In the diagram, the perpendicular angle is shown with a tiny square.
4. The angle between a line and a surface when the line points straight up from it.
The flagpole stands at a perpendicular angle to the flat ground.