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Triangle :: Triangle (n.) A small constellation situated between Aries and Andromeda.

Triangle :: Triangle (n.) A kind of frame formed of three poles stuck in the ground and united at the top, to which soldiers were bound when undergoing corporal punishment, -- now disused..

Right-angled :: Right-angled (a.) Containing a right angle or right angles; as, a right-angled triangle..

Hypothenuse :: Hypothenuse (n.) The side of a right-angled triangle that is opposite to the right angle.

Scalene :: Scalene (a.) Having the sides and angles unequal; -- said of a triangle.

Cepheus :: Cepheus (n.) A northern constellation near the pole. Its head, which is in the Milky Way, is marked by a triangle formed by three stars of the fourth magnitude. See Cassiopeia..

Triangular :: Triangular (a.) Having three angles; having the form of a triangle.

Oblique-angled :: Oblique-angled (a.) Having oblique angles; as, an oblique-angled triangle..

Subtense :: Subtend (v. t.) To extend under, or be opposed to; as, the line of a triangle which subtends the right angle; the chord subtends an arc..

Triangularly :: Triangularly (adv.) In a triangular manner; in the form of a triangle.

Revolution :: Revolution (n.) The motion of a point, line, or surface about a point or line as its center or axis, in such a manner that a moving point generates a curve, a moving line a surface (called a surface of revolution), and a moving surface a solid (called a solid of revolution); as, the revolution of a right-angled triangle about one of its sides generates a cone; the revolution of a semicircle about the diameter generates a sphere..

Converse :: Converse (n.) A proposition in which, after a conclusion from something supposed has been drawn, the order is inverted, making the conclusion the supposition or premises, what was first supposed becoming now the conclusion or inference. Thus, if two sides of a sides of a triangle are equal, the angles opposite the sides are equal; and the converse is true, i.e., if these angles are equal, the two sides are equal..

Tetrahedron :: Tetrahedron (n.) A solid figure inclosed or bounded by four triangles.

Transmutation :: Transmutation (n.) The change or reduction of one figure or body into another of the same area or solidity, but of a different form, as of a triangle into a square..

Trigon :: Trigon (n.) A figure having three angles; a triangle.

Kathetal :: Kathetal (a.) Making a right angle; perpendicular, as two lines or two sides of a triangle, which include a right angle..

Spider''s Web :: Spider's web () The silken web which is formed by most kinds of spiders, particularly the web spun to entrap their prey. See Geometric spider, Triangle spider, under Geometric, and Triangle..

Pyramid :: Pyramid (n.) The game of pool in which the balls are placed in the form of a triangle at spot.

Birectangular :: Birectangular (a.) Containing or having two right angles; as, a birectangular spherical triangle..

Amblygon :: Amblygon (n.) An obtuse-angled figure, esp. and obtuse-angled triangle..

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