| Timothy Walker - Geometry - 1829 - 129 pages
...was to be proved. TRIANGLES. 44. DBF. — A triangle is a figure bounded by three straight lines. — **An equilateral triangle is one which has its three sides equal. — An isosceles triangle** is one which has two sides equal. — A scalene triangle is one which has no two sides equal. — A... | |
| John Playfair - Euclid's Elements - 1835 - 316 pages
...equal. 20. A 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... | |
| Adrien Marie Legendre - Geometry - 1836 - 359 pages
...eight, an octagon ; that of nine, a nonagon; that of ten, a decagon ; and that of twelve, a dodecagon. B **15. An equilateral triangle is one which has its three...unequal. 16. A right-angled triangle is one which** O has a right angle. The side opposite the right angle is called the hypothenuse. Thus, in the triangle... | |
| Charles Davies - Surveying - 1839 - 376 pages
...of eight, an octagon; that of nine a nonagon ; that of ten, a decagon; that of twelve, a dodecagon. **15. An equilateral triangle is one which has its three...angle. The side opposite the right angle is called the** hypothenuse. Thus, 20 INTRODUCTION. 17. Among the quadrilaterals, we distinguish : The square, which... | |
| Charles Davies - Surveying - 1839 - 261 pages
...decagon; that of twelve, a dodecagon. 15. An equilateral triangle is one which has its three sidea **equal ; an isosceles triangle, one which has two of...one which ^ has a right angle. The side opposite the** 17. Among the quadrilaterals, we distinguish : The square, which has its sides equal, and its angles... | |
| Charles Davies - Navigation - 1835 - 359 pages
...of eight, an octagon; that of nine a nonagon ; that of ten, a decagon; that of twelve, a dodecagon. **15. An equilateral triangle is one which has its three...angle. The side opposite the right angle is called the** hypothenuse. Thus, iq the triangle ABC, right-angled at A, jjthe side BC is the hypothenuse. 20 1NTRODUCT1ON.... | |
| Nicholas Tillinghast - Geometry, Plane - 1844 - 96 pages
...is one which has two equal sides. 15. When no two sides are equal, the triangle is called scalene. **16. A right-angled triangle is one which has a right angle. The side opposite** B the right angle is called the hypotenuse. Thus in the triangle ABC, right angled at A, BC is the... | |
| Charles Davies - Navigation - 1846 - 288 pages
...of eight, an octagon; that of nine a nonagon; that of ten, a decagon ; that of twelve, a dodecagon. **15. An equilateral triangle is one which has its three...one which ^ has a right angle. The side opposite the** 17. Among the quadrilaterals, we distinguish : The square, which has its sides equal, and its angles... | |
| Charles Davies - Trigonometry - 1849 - 384 pages
...or polygon, and the lines themselves, taken together, form the contour, or perimeter of the polygon. **15. An equilateral triangle is one which has its three...unequal, 16. A right-angled triangle is one which** C has a right angle. The side opposite the right angle is called the hypothenuse. Thus, in the triangle... | |
| Elias Loomis - Conic sections - 1849 - 252 pages
...rectilineal figure, or polygon, and the lines themselves, taken together, form the perimeter of the polygon. **15. An equilateral triangle is one which has its three sides equal. An isosceles triangle** is that,which has only two sides equal. A scalene triangle is one which has three unequal sides. 16.... | |
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