Apparatus for verification of the Pythagorean theorem

Details Apparatus for verification of the Pythagorean theorem Apparatus for verification of the Pythagorean theorem

1977-11-07

1979-02-06

Grieb, William H.

G09B 2302

Patent

active

041376528

ABSTRACT:
A didactical aid for the teaching of geometry and, more particularly, an apparatus is provided which allows the experimental verification of the Pythagorean theorem on an infinite number of right triangles obtained by varying the acute angles formed by the hypotenuse with the perpendiculars. The apparatus is operated by means of a knob and immediately visualizes the Pythagorean relation.

REFERENCES:
patent: 1469954 (1923-10-01), Kennedy
patent: 1521247 (1925-06-01), Brown
patent: 1642236 (1927-09-01), Foster
patent: 2507460 (1950-05-01), Schacht
patent: 2885795 (1959-05-01), Feldhake
patent: 3359653 (1967-12-01), Redfern
Welch Physics and Chemistry Digest, vol. 5, No. 2, p. 27, 1955.

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