Special right triangle is 90°, leaving the remaining angle to be 30°. Right triangles whose sides are of integer lengths, with the sides collectively known as Pythagorean triples, possess angles that cannot all be rational numbers of degrees. (This follows from Niven's theorem.) They are most useful in that they may be easily remembered and any multiple of the sides produces the same relationship. Using Euclid's formula for generating Pythagorean triples, the sides must be in the ratio where "m" and "n" are any positive integers such that . There are several Pythagorean triples which are well-known, including those with sides in the
Poem of the Right Angle Poem of the Right Angle The Poem of the Right Angle ("Le Poeme de l'Angle Droit") is a series of 19 paintings and corresponding writings composed by the influential Swiss-French architect Le Corbusier between 1947 and 1953. Aside from his seminal manifesto "Toward an Architecture", "The Poem of the Right Angle" is considered to be his most lucid synthesis of personal maxims. "The Poem of the Right Angle" was composed over a period of seven years, from 1947-1953. The paintings are arranged symmetrically in seven rows, or "zones" and read across, in order, 5, 3, 5, 1, 3, 1, 1