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Any side of a triangle is less than the sum of the other two sides...
Elements of Geometry with Notes - Page 38
by John Radford Young - 1833 - 216 pages

## Thesaurium Mathematicae: Or, The Treasury of the Mathematicks: Containing ...

John Taylor - Mathematics - 1707 - 608 pages
...two Square r, then V*t obtufe : If they be equal^ 'tis ri ht ^ // the Square of the faid Side be left than the Sum of the Squares of the other two Sides, the Angle is acute. PROP. §3. PROP. II. Two fide f, and an Angle oppojite to one of them in an Oblique-angled...

## A treatise on navigation, and nautical astronomy

Edward Riddle - Nautical astronomy - 1824 - 572 pages
...removed, by the consideration that when the square of the side opposite the angle computed is greater than the sum of the squares of the other two sides, the angle must be obtuse ; otherwise the angle is acute. As a small arc can be found more correctly by even proportion...

## Elements of plane (solid) geometry (Higher geometry) and trigonometry (and ...

Nathan Scholfield - 1845 - 896 pages
...XXIV. immediately follows, that is, it the square of any side of a triangle be equivalent to the sum of the squares of the other two sides, the angle opposite the former shall be right; for these propositions show, that if such equivalence exist, the angle can neither...

## First Lessons in Geometry: Upon the Model of Colburn's First Lessons in ...

Alpheus Crosby - Geometry - 1847 - 190 pages
...aACD ? ni ADC yx BCD? .-. InfDBC, BCawBD? •». But, as AD = AC, BD sw BA + AC ? § 78. THE OR. X- Any side of a triangle is less than the sum of the other two. [Proved by the aid of Theor. IX] \$79. a.) AsBC<BA + AC, BC — ACswBA? 30.3-. And BC —...

## Elements of Geometry and Conic Sections

Elias Loomis - Conic sections - 1860 - 246 pages
...each, and the angle A to the angle D. Therefoxe, if two triangles, &c. PROPOSITION VIII. THEOREM. v Any side of a triangle is less than the sum of the other-two Let ABC be a triangle; any one of its aides is less than the sum of the other two, viz.:...

## Elements of Geometry and Trigonometry: With Practical Applications

Benjamin Greenleaf - Geometry - 1862 - 520 pages
...BOOK I. 61. Cor. Therefore every equiangular triangle is equilateral. PROPOSITION IX. — THEOREM. 62. Any side of a triangle is less than the sum of the other two. In the triangle ABC, any one side, C as AB,is less than the sum of the other two sides,...

## Elements of Plane and Spherical Trigonometry: With Practical Applications

Benjamin Greenleaf - Geometry - 1861 - 628 pages
...ABC is 61. Cor. Therefore every equiangular triangle is equilateral. PROPOSITION IX. — THEOREM. 62. Any side of a triangle is less than the sum of the other two. In the triangle ABC, any one side, as AB, is less than the sum of the other two sides, AC...

## Elements of Geometry: With Practical Applications to Mensuration

Benjamin Greenleaf - Geometry - 1863 - 504 pages
...isosceles. 61. Cor. Therefore every equiangular triangle is equilateral. PROPOSITION IX. — THEOREM. 62. Any side of a triangle is less than the sum of the other two. In the triangle ABC, any one side, as AB,is less than the sum of the other two sides, AC...