right triangle

noun

1. a triangle having a right angle ( oblique triangle ).

right triangle

noun

1. a triangle one angle of which is a right angle Also called (in Britain and certain other countries)right-angled triangle

right triangle

1. A triangle having a right angle.

right triangle

1. A triangle that contains a right angle .

Word History and Origins

Origin of right triangle¹

First recorded in 1920–25

Example Sentences

Meanwhile, the smallest right triangle with whole number side lengths was 3-4-5, which had an area of 6 square inches.

From FiveThirtyEight

Because of the symmetry about that isosceles right triangle in the top right of the figure, the two chords had to be equal in length.

From FiveThirtyEight

The height — along with one of the legs of the isosceles right triangles and a line connecting the equilateral base’s centroid with one of its corners — formed yet another right triangle.

From FiveThirtyEight

The upper right triangle has the extra vertical line, and the fine line to upper block, n2 U2 S2.

From Project Gutenberg

Think how you can get a right triangle from a right tri-prism.

From Project Gutenberg

One of the drawings on this page is called a right triangle.

From Project Gutenberg

When she comes to the solution of the right triangle, the baseball diamond does not come to her mind.

From Project Gutenberg

There was one crease at the base, which would be the base of the right triangle, a very slight crease.

From Project Gutenberg