 | Euclides - 1847 - 128 pages
...angulus; and many.sided figures, polygons, from the Greek words iro\v£, many, and yiavia, an angle. 23. Of three.sided figures, an equilateral triangle is that which has three equal sides. 24. An isosceles triangle is that which has only two sides equal. The word isosceles is derived from... | |
 | Euclides - 1848 - 52 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... | |
 | Euclid, Thomas Tate - 1849 - 120 pages
...figures, or triangles, by three straight lines. xxn. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four...isosceles triangle is that which has only two sides equal. A XXVI. A scalene triangle, is that which has three unequal sides. xxvn. A right angled triangle, is... | |
 | Euclides - 1852 - 152 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. [Observe that an equilateral triangle must be isosceles, B 4 BOOK I. BOOK I. but that... | |
 | Euclides - 1853 - 146 pages
...Trilateral figures, or triangles, by three straight lines. mi. 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... | |
 | Euclides - 1853 - 176 pages
...three straight lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, от polygons, by more than four straight lines. XXIV....triangle is. that which has only two sides equal. Equilateral. Isosceles. Scalene. XXVI. A scalene triangle is that which has three unequal sides. XXVII.... | |
 | Royal Military Academy, Woolwich - Mathematics - 1853 - 400 pages
...by four straight lines. 23. Multilateral figures, or polygons, by more than four straight lines. 24. Of three-sided figures, an equilateral triangle is that which has three equal sides. 25. An isosceles triangle is that which has two sides equal. 26. A scalene triangle is that which has... | |
 | Euclides - 1855 - 262 pages
...Mutilateral [that is, many-sided] figures, or polygons, [that is, manyangled, are those which are contained] by more than four straight lines. XXIV. Of three-sided figures, an equilateral [that is, equal-sided] triangle is that which has three equal sides. XXV. An isosceles [that is, equal-kgged... | |
 | William Pease - 1856 - 108 pages
...polygon. The three angles of any triangle are together equal to two right angles, or 180 degrees. 44*. Of three-sided figures, an Equilateral Triangle is that which has three equal sides. Its three angles are also equal to one another, and each contains 60 degrees. 45*. An Isosceles Triangle... | |
 | Robert Potts - Geometry, Plane - 1860 - 380 pages
...Trilateral figures, or triangles, by three straight lines. XXII. Quadrilateral, by four straight lines. xxm. Multilateral figures, or polygons, by more than four...sides. XXV. An isosceles triangle is that which has two sides equal. XXVL A scalene triangle is that which has three unequal sides. xxvn. A right-angled... | |
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Of three-sided figures, an equilateral triangle is that which has three equal sides. 
