 In general, any side may be taken as the base; but in an isosceles triangle, unless otherwise 'specified, the side which is not one of the equal sides is taken as the base.  The Elements of Geometry - Page 23by Webster Wells - 1894 - 378 pagesFull view - About this book
 | William Chauvenet - Geometry - 1871 - 380 pages
...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 DE and DF are equal, the third... | |
 | William Chauvenet - Geometry - 1872 - 382 pages
...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 DE and DF are equal, the third side... | |
 | Elias Loomis - Conic sections - 1877 - 458 pages
...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 which... | |
 | William Henry Harrison Phillips - Geometry - 1878 - 236 pages
...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 sign A... | |
 | Franklin Ibach - Geometry - 1882 - 208 pages
...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 is... | |
 | John Homer French - Arithmetic - 1889 - 512 pages
...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 the shortest... | |
 | Edward Albert Bowser - Geometry - 1890 - 414 pages
...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 of the... | |
 | Seth Thayer Stewart - Geometry - 1891 - 428 pages
...right-angled triangle is the side opposite the right angle, as AC in the triangle ABC. 117. The base of a triangle is the side upon which it is supposed to rest, as BC in the triangle ABC. 11§. The altitude is the perpendicular from the opposite vertex to... | |
 | Charles Ambrose Van Velzer, George Clinton Shutts - Geometry - 1894 - 416 pages
...triangle. 58. A triangle, which has all three sides equal, is called an equilateral triangle. 59. The base of a triangle is the side upon which it is supposed to stand. The angle which is opposite the base, is called the vertical angle. Generally, any side may be assumed... | |
 | George Clinton Shutts - Geometry - 1894 - 412 pages
...The angle which is opposite the base is the vertical angle or the vertex of the triangle. Generally, any side may be taken as the base, but in an isosceles triangle that side which is not one of the two equal sides is always considered the base. 80. The altitude of... | |
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