 | Euclides - 1838 - 264 pages
...four straight lines. XIX. Multilateral figures, or polygons, by more than four straight lines. XX. Of three-sided figures, an equilateral triangle is that / \ which has three equal sides. ^/ \^ XXI. An isosceles triangle is that which has two sides equal. XXII. A scalene triangle is that... | |
 | Robert Simson - Geometry - 1838 - 434 pages
...figures, or triangles, by three straight lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four straight lines. XXIV. Of three sided figures, an equilateral triangle is that which has three equal sides. XXV. An isosceles... | |
 | Euclides - Geometry - 1841 - 378 pages
...or triangles, by three straight lines. XXII. Quadrilateral figures, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four...A scalene triangle is that which has three unequal sides. XXVII. A right-angled triangle is that which has a right angle. XXVIII. An obtuse angled triangle... | |
 | Euclides - 1842 - 316 pages
...figures, or triangles, by three straight lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four...A scalene triangle is that which has three unequal sides. XXVII. A right-angled triangle is that which has a right angle. XXVIII. An obtuse-angled triangle... | |
 | William Pease - Geometry - 1843 - 80 pages
...60 degrees. The three angles of any triangle, are together equal to two right angles or 180 degrees. XXV. An isosceles triangle is that which has only two sides equal. Two of its angles are equal, namely, those opposite to the equal sides. XXVI. A scalene triangle is... | |
 | Euclid - Geometry - 1845 - 218 pages
...contained by straight lines. XXI. Trilateral figures, or triangles, by three straight lines. XXII. XXIII. Multilateral figures, or polygons, by more than four...scalene triangle, is that which has three unequal sides. XXVII. A right-angled triangle, is that which has a right angle. XXVIII. An obtuse-angled triangle,... | |
 | Euclides - 1845 - 546 pages
...figures, or triangles, by three straight lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four...sides. XXV. An isosceles triangle is that which has two sides equal. XXVI. A. scalene triangle is that which has three unequal sides. XXVII. A right-angled... | |
 | Great Britain. Admiralty - Geometry - 1846 - 128 pages
...figures, or triangles, by three straight lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four...A scalene triangle is that which has three unequal sides. XXVII. A right-angled triangle is that which has a right angle; and the side opposite the right... | |
 | Great Britain. Admiralty - Geometry - 1846 - 128 pages
...figures, or triangles, by three straight lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four...triangle is that which has three equal sides. XXV. XXVI. A scalene triangle is that which has three unequal sides. XXVII. A right-angled triangle is that... | |
 | Euclides - 1846 - 292 pages
...Multilateral figures, or polygons, by more than four straight lines : Of three-sided figures, xxiv. An equilateral triangle is that which has three equal...sides : xxv. An isosceles triangle is that which has two sides equal : xxvi. A scalene triangle is that which has three unequal sides : xxvu. A right-angled... | |
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Of three-sided figures, an equilateral triangle is that which has three equal sides. 
