right angle

noun

: the angle bounded by two lines perpendicular to each other : an angle of 90° or ½ π radians

right-angled

ˈrīt-ˈaŋ-gəld 

adjective

or right-angle

ˈrīt-ˈaŋ-gəl 

Examples of right angle in a Sentence

A square has four right angles.

Hold the nail at a right angle to the board.

The two boards are joined at right angles to each other.

Recent Examples on the Web

This is a detail that maybe 20 people in the theater have the right angle to see. — Dewayne Bevil, The Orlando Sentinel, 15 Apr. 2026

The white detailing hits at your hips at just the right angle so the suit doesn't have to be super high cut or ultra-cheeky. — Brittany Talarico, PEOPLE, 22 June 2026

Another way to alternate is to mow at a right angle to your previous cut. — Megan Hughes, Better Homes & Gardens, 24 May 2026

While the rough was punishing enough, the main defense was in uniquely tricky pins and the necessity to approach the greens from just the right angles. — Jeff Hartman, Forbes.com, 19 May 2026

Word History

First Known Use

15th century, in the meaning defined above

Rhymes for right angle

• bangle
• dangle
• jangle
• mangle
• strangle
• tangle
• wrangle
• disentangle
• entangle
• quadrangle
• triangle
• untangle

Kids Definition

right angle

noun

: an angle whose measure is 90° : an angle whose sides are perpendicular to each other

right-angled

ˈrīt-ˈaŋ-gəld

adjective

or right-angle

-gəl