 | Charles Davies - 1850 - 238 páginas
...triangle ACB. 14 BOOK I. Definitions. 48. There are several kinds of quadrilaterals. First. The square, which has all its sides equal, and all its angles right angles. Second. The rectangle, the opposite sides of which are parallel and its angles right angles. Third.... | |
 | Charles Davies - 1850 - 218 páginas
...altitude of BOOK I . Definitions. 48. There are several kinds of quadrilaterals. First. The square, which has all its sides equal, and all its angles right angles. Second. The rectangle, the opposite sides of which are parallel and its angles right angles. Third.... | |
 | Euclides - 1852 - 152 páginas
...triangle. Fig. 3. is an equilateral acute angled triangle.] XXX. Of four,sided figures, a square is that which has all its sides equal, and all its angles right angles. XXXI. 1 An oblong is that which has all its angles right angles, but has not all its sides equal. XXXII.... | |
 | Euclides - 1853 - 334 páginas
...triangle each of the three angles of which is an acute angle. XXX. A square is defined to be a four- sided figure which has all its sides equal and all its angles right angles. XXXI. An oblong is a four- sided figure which has all its angles right angles, but has not all its... | |
 | Euclid - 1853 - 176 páginas
...under those tw<f lines; thus the rectangle ABCD would be termed the rectangle under AB and BC. 28. A SQUARE is a quadrilateral figure which has all its sides equal, and two sides of which form a right angle. SCHOLIUM. As a square is contained by four equal lines, upon... | |
 | Euclides - 1853 - 176 páginas
...acute^angled triangle is that which has three acute angles. XXX. Of four-sided figures, a square is that, which has all its sides equal, and all its angles right angles. Square. Oblong. XXXI. An oblong is that which has all its angles right angles, but has not all its... | |
 | Euclides - 1853 - 146 páginas
...acute-angled triangle is that which has three acute angles. XXX. Of four-sided figures, a square is that which has all its sides equal, and all its angles right angles. , , XXXI. An oblong is that which has all its angles right angles, but has not all its sides equal.... | |
 | Royal Military Academy, Woolwich - 1853 - 400 páginas
...acute-angled triangle is that which has three acute angles. 30. Of four-sided figures, a square is that which has all its sides equal, and all its angles right angles. 31. An oblong is that which has all its angles right angles, but has not all its sides equal. 32. A... | |
 | William Somerville Orr - 1854 - 534 páginas
...triangle has each of its angles acute, or less than a right angle. Of four-sided figures, a square is that which has all its sides equal, and all its angles right angles. If the four sides are equal, and only one of the angles affirmed to be right, the other three angles... | |
 | Thomas Lund - 1854 - 520 páginas
...notions and principles. For example, in the former Part a square was defined to be "a parallelogram, which has all its sides equal and all its angles right angles"; in this Part such a construction is required to be actually made under certain given circumstances.... | |
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A rhombus is that which has all its sides equal, but its angles are not right angles. 
