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" The base of a triangle is the side upon which it is supposed to stand. "
The Pilot Arithmetics - Page 243
1923
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A Treatise on Elementary Geometry: With Appendices Containing a Collection ...

William Chauvenet - Geometry - 1871 - 380 pages
...MNP, which is right-angled at N. The side MP, opposite to the right angle, is called the hypotenuse. The base of a triangle is the side upon which it is supposed to stand. In general any side may be assumed as the base ; but in an isosceles triangle DEF, whose sides...
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A Treatise on Elementary Geometry: With Appendices Containing a Collection ...

William Chauvenet - Mathematics - 1872 - 382 pages
...MNP, which is right-angled at N. The side MP, opposite to the right angle, is called the hypotenuse. The base of a triangle is the side upon which it is supposed to stand. In general any side may be assumed as the base ; but in an isosceles triangle DEF, whose sides...
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Primer of geometry

Francis Cuthbertson (geometer.) - 1876 - 102 pages
...lie along the arms of the other, the angles are said to be equal to one another. A DEFINITIONS &c. A triangle is a plane figure bounded by three straight lines, called the sides of the triangle. The three angles formed by the sides are called the angles of the triangle. If one...
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Elements of Geometry, Conic Sections, and Plane Trigonometry

Elias Loomis - Conic sections - 1877 - 458 pages
...is one which has an obtuse angle. An acute-angled triangle is one which has three acute angles. 30. The base of a triangle is the side upon which it is supposed to stand. Any side may be assumed as the base, but in an isosceles triangle that side is called the base...
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Ray's New Practical Arithmetic: A Rev. Ed. of the Practical Arithmetic

Joseph Ray - Arithmetic - 1877 - 350 pages
...the square root of 240. Given two of the sides of a right-angled triangle to find the third side. 1 . A triangle is a plane figure bounded by three straight lines, called its sides. .\ Thus, DEP is a triangle; its sides are DE, EF, and D P. 2. When one of the sides is perpendicular...
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Elements of Geometry: And the First Principles of Modern Geometry

William Henry Harrison Phillips - Geometry - 1878 - 236 pages
...right angle ; as, LMN. The side opposite the right angle is called the hypothenuse; as, LN. DEF. 6. The base of a triangle is the side upon which it is supposed to stand, and the opposite angle is called the vertical angle. Any side may be taken as the base. The...
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A Practical Arithmetic: Designed for Grammar Schools and Academies

George E. Seymour - Arithmetic - 1880 - 332 pages
...its length? What its shape? What would be its area? What the length of a side of this figure? 445. A triangle is a plane figure bounded by three straight lines called its sides. 496. A right-angled triangle is a triangle having two of its sides perpendicular to each...
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Elements of Plane Geometry

Franklin Ibach - Geometry - 1882 - 208 pages
...formed by the sides meeting one another. A triangle has six parts, — three sides and three AB angles. The Base of a triangle is the side upon which it is supposed to stand. The Vertical Angle of a triangle is the angle opposite the base. An Exterior Angle of a triangle...
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Advanced Arithmetic for Secondary Schools: A Comprehensive Treatise on the ...

John Homer French - Arithmetic - 1889 - 512 pages
...that has two of its sides equal. <i. A scalene triangle is one that has no two of its sides equal. h. The base of a triangle is the side upon which it is supposed to stand. i. The vertex of a triangle is the angle opposite the base. j. The altitude of a triangle is...
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The Elements of Plane and Solid Geometry ...

Edward Albert Bowser - Geometry - 1890 - 414 pages
...which has an obtuse angle. When all the angles are equal it is called an equiangular triangle. 93. The base of a triangle is the side upon which it is supposed to stand. Either side may be taken as the base; but in an isosceles triangle the side which is not one...
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