Definition of Obtuse-angled triangle

1. Noun. A triangle that contains an obtuse interior angle.

Exact synonyms: Obtuse Triangle
Generic synonyms: Triangle, Trigon, Trilateral

Obtuse-angled Triangle Pictures

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Lexicographical Neighbors of Obtuse-angled Triangle

obturator externus
obturator fascia
obturator hernia
obturator internus
obturator lymph nodes
obturator membrane
obturator nerve
obturator vein
obtuse-angled triangle (current term)
obtuse angle
obtuse leaf
obtuse triangle
obtuse triangles
obtusely umbonate

Literary usage of Obtuse-angled triangle

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago by Robert Simson, Euclid (1829)
"An obtuse-angled triangle, is that which has an obtuse angle. XXIX. An acute-angled triangle, ... obtuseangled triangle ..."

2. The Elements of Geometry by George Bruce Halsted (1886)
"An obtuse-angled triangle has one of its angles obtuse. 121. An Acute-angled Triangle has all three angles acute. 122. ..."

3. The Kindergarten Guide: An Illustrated Hand-book, Designed for the Self by Maria Kraus-Boelte, John Kraus (1881)
"40, representing a sun-shade, is developed from the obtuse- angled triangle. 40. Fig. 41, representing a pitcher, is developed from the hexagon. 41. ..."

4. Quarter Century Edition of The Paradise of Childhood: A Practical Guide to by Edward Wiebé, Henry Wolcott Blake (1907)
"The little box containing fifty-six tablets of the above description, each of which are in form like one-half of the obtuse-angled triangle, enables the ..."

5. Mathematical Questions and Solutions (1890)
"If cube the Brocard-angle, andS any acute angle of a triangle, prove that cot 01 sin 28 > 2 in an obtuse-angled triangle, and < 2 in an acute-angled ..."

6. Geometrical Problems Deducible from the First Six Books of Euclid: Arranged by Miles Bland (1827)
"... will cut off" from the triangle an obtuse-angled triangle, which will be equal to that cut off from the square by a line drawn from the intersection ..."

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