| Euclid, John Playfair - Circle-squaring - 1819 - 348 pages
...greater than a right angle. Therefore, in a circle, &c. Q,. ED COR. From this it is manifest, that **if one angle of a triangle be equal to the other two, it is a right angle,** because the angle adjacent to it is equal to the same two ; and when the adjacent angles are equal,... | |
| George Lees - 1826 - 266 pages
...right angle. Therefore, in a circle, &c. QED *- .1 . » • N Cor. From this, it is manifest, that **if one angle of a triangle be equal to the other two, it is a right angle,** because the angle adjacent to it is equal to the same two ; and, when Book l1. the adjacent angles... | |
| Robert Simson - Trigonometry - 1827 - 513 pages
...angle of the less segment is said to be less, than a right angle." COR. From this it is manifest, that **if one angle of a triangle be equal to the other two, it is a right angle:** because the angle adjacent to it is equal f to the same two ; and when the adjacent angles are equal,... | |
| Euclid - 1835 - 540 pages
...angle of the ' less segment is said to be less than a right angle.' Con. From this it is manifest, that **if one angle of a triangle be equal to the other two, it is a right angle,** because the angle adjacent to it is equal to the same two ; and when the adjacent angles are equal,... | |
| Mathematics - 1836 - 472 pages
...a segment less than a simicircle is greater than a right angle. Cor. From this it is manifest, that **if one angle of a triangle be equal to the other two, it is a right angle,** because the angle adjacent to it is equal to the same two ; and when the adjacent angles are equal,... | |
| Euclid - Geometry - 1837 - 410 pages
...3. If a triangle have a right angle, the remaining angles. are together equal to a right angle ; and **if one angle of a triangle be equal to the other two, it is a right angle.** Cor. 4. The angles at the base of a right-angled isosceles triangle are each half a right angle. Cor.... | |
| Andrew Bell - Euclid's Elements - 1837 - 240 pages
...angle ; wherefore the other ADC is greater than a right angle. COB. — From this it is manifest, that **if one angle of a triangle be equal to the other two, it is a right angle,** because the angle adjacent to it is equal to the same two ; and when the adjacent angles are equal,... | |
| John Playfair - Geometry - 1837 - 332 pages
...angle ; wherefore the other ADC is greater than a right angle. COR. From this it is manifest, that **if one angle of a triangle be equal to the other two, it is a right angle,** because the angle adjacent to it is equal to the same two ; and when the adjacent angles are equal,... | |
| Thomas Holliday - Surveying - 1838 - 404 pages
...8, plate I. Note 1. K—L is called the base, L—M the perpendicular, and K—M the hypothenuse. 2. **If one angle of a triangle be equal to the other two,** the figure is a rightangled triangle. 3. The squares of K—L and L—M are equal to the square of... | |
| Euclides - 1841 - 378 pages
...of the less segment is said to be less, than a right angle." QED COR. From this it is manifest, that **if one angle of a triangle be equal to the other two, it is a right angle,** because the angle adjacent to it is equal* to the same • 32.1. two; and when the adjacent angles... | |
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