| Adrien Marie Legendre - 1822 - 394 σελίδες
...five, a pentagon ; that of six, a hexagon ; and so on. XVI. A right-angled triangle is one which has a right angle. The side opposite the right angle is called the hypotenuse. Thus, ABC is a triangle right-angled at A; the side BC is B its hypotenuse. XVII. Among quadrilaterals,... | |
| John Playfair - 1835 - 336 σελίδες
...scalene triangle is that which has three unequal sides. 21. Aright angled trangle is that which has a right angle. The side opposite the right angle is called the hypotenuse. 22. An obtuse angled triangle, is that which has an obtuse angle. 23. An acute angled triangle, is... | |
| Jason M. Mahan - 1839 - 312 σελίδες
...Ans. 19 feet. OF THE RIGHT ANGLED TRIANGLE. A right angled triangle is a plane superficies, having one right angle : the side opposite the right angle is called the hypothenuse, the side on which the triangle stands is called the base, and the other side the perpendicular.... | |
| William Minifie - 1849 - 278 σελίδες
...21. An ACUTE ANGLED TRIANGLE has all its angles acute, as A and Б. 22. A RIGHT ANGLED TRIANGLE has one right angle; the side opposite the right angle is called the hypothenuse ; the other sides are called respectively the base and perpendicular. The figures А. В.... | |
| William E. Bell - 1857 - 250 σελίδες
...tiangle has two of its sides equal. A scalene triangle has all its sides untqual. Figs. 7 and 8. S3. A right-angled triangle contains one right angle....10. The rectangle, or oblong square, Fig. 11, has all its angles right angles and its opposite sides equal and parallel. The parallelogram, Fig. 12,... | |
| Emerson Elbridge White - 1861 - 348 σελίδες
...straight lines. It also contains, as its name indicates, three angles. A right-angled triangle contains a right angle. The side opposite the right angle is called the hypotenuse. The other two sides are called the base and perpendicular. Perpendicular. Base. It is an established... | |
| Adrien Marie Legendre - 1863 - 464 σελίδες
...are are two classes : right-angled and oblique-angled. 1st. A RIGHT-ANGLED TRIANGLE is one that has one right angle. The side opposite the right angle, is called the hypotlw nuse. BOOK I. If one angle of an oblique-angled triangle is obtuse, the triangle is said to... | |
| Charles Davies - 1872 - 464 σελίδες
...are are two classes: right-angled and oblique-angled. 1st. A RIGHT.ANGLED TRIANGLE is one that has one right angle. The side opposite the right angle, is called the hypoth* muse. If one angle of an oblique-angled triangle is obtuse, the triangle is said to be OBTUSE-ANGLED.... | |
| Adrien Marie Legendre - 1874 - 500 σελίδες
...are are two classes : right-angled and oblique-angled. 1st. A RIGHT-ANGLED TRIANGLE is one that has one right angle. The side opposite the right angle, is called the hypothenuse. 2d. An OBLIQUE-ANGLED TRIANGLE is one whose angles are all oLlique. If one angle of an... | |
| Henry Bartlett Maglathlin - 1876 - 364 σελίδες
...TRIANGLE has one obtuse angle. ACUTE-ANGLED TRIANGLE. OBTUSE-ANGLED THIANOLI. A RIGHT-ANGLED TUIANGLE has one right angle. The side opposite the right angle is called the HYPOTiiBNUSE, and the side, perpendicular to the base, the PERPENDICULAR. RIGUT-ANGLED TRIANGLE. 411.... | |
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