right-angled triangle

British  

noun

1. US and Canadian name: right triangle.  a triangle one angle of which is a right angle

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Example Sentences

They fold the crisp sheet to an oblong, and the oblong to a square, and the square to a right-angled triangle.

From Salon

Further, of trilateral figures, a right-angled triangle is that which has a right angle, an obtuse-angled triangle that which has an obtuse angle, and an acute-angled triangle that which has its three angles acute.

From Project Gutenberg

An important application of these theorems is at once made to a right-angled triangle, viz.:—

From Project Gutenberg

Consider the case of a right-angled triangle whose two sides are equal, such a triangle as is formed by two sides of a square and a diagonal.

From Project Gutenberg

In any right-angled triangle the square of the sides subtending the right angle is equal to the square of the sides containing the right angle.

From Project Gutenberg