# right-angled triangle

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Related to right-angled triangle: hypotenuse

## right-angled triangle

a triangle one angle of which is a right angle
References in periodicals archive ?
A compact conical beam antenna has been proposed based on the QMSIW array, which is consisted of six isosceles right-angled triangle metallic patch printed on the upper side of the substrate in a windmill-shape and diagonal periodic metallic via holes drilled along the hypotenuse of the triangle patch.
This is rather harder to do with the second method, one would need to go on to show how the sine and cosine functions arrived at via the unit circle can be used in right-angled triangles, probably by setting up a metaphor between the properties of triangles and the unit circle.
The book, Opus Palatinum de Triangulis, written by Georg Joachim Rheticus in the 16th Century, was probably the first to define trigonometry in terms of right-angled triangles.
BN = LL' x = OL x sin [alpha], to the triangle OLL; (9) ND = DL x cos [alpha], to the right-angled triangle LND.
If [psi] is the angle, which the tangent at P makes which the x-axis, then from the right-angled triangle PQR, we have
What name is given to that side of a right-angled triangle opposite the right angle?
When did you suddenly see the use in the square on the hypoteneuse of a right-angled triangle being equal to the sum of the squares on the other two sides?
The hypotenuse, the longest side of a right-angled triangle, is the latest muse to inspire abstract artist Ian Davenport.
With my stick I drew in the dust a right-angled triangle.
The site for the Loft, a 77 unit condominium development, is a right-angled triangle with both acute angles cut off so it is more a misshapen pentagon.
If he only had a brain, he would know the theory relates to a right-angled triangle.
Students who had been trained in using the TI-92 were asked to compute x, given that a right-angled triangle had sides x, x+3, and x+6 in at least three ways, and to document their solution methods.

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