 | Euclides - 1853 - 334 sider
...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 sides equal. XXXII.... | |
 | Euclid - 1853 - 176 sider
...the line AB. SCHOLIUM. The definition of a square, as given by Euclid, viz. " a four-sided figure, which has all its sides equal, and all its angles right angles" is more than sufficient, and really involves a theorem. It is only necessary to state (d) Constr. (e)... | |
 | William Somerville Orr - 1854 - 534 sider
...than a right angle. An acute-angled triangle has each of its angles acute, or less than a right angle. Of four-sided figures, a square is that which has...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 sider
...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.... | |
 | Euclides - 1855 - 270 sider
...two preceding species of triangles have each two acute angles, as will be shown in the sequel. XXX. Of four-sided figures, a square is that which has...its sides equal, and all its angles right angles. This definition is redundant. If the general definition annexed to the 34th Prop, of this book be considered,... | |
 | John Playfair - 1855 - 334 sider
...sided figures, a square is that which has all its sides equal and all its angles right angles. 26. An oblong is that which has all its angles right angles, but has not a]] its sides equal. 27. A rhombus is that which has all its sides equal, but its angles are not right... | |
 | Noble Heath - 1855 - 468 sider
...having all its angles right angles, hut only its opposite sides equal. 107. The Pythagorean Tahle, which has all its sides equal, and all its angles right angles, is a square. As the divisions of its sides are also equal, suppose each to be 1 inch long : then, as... | |
 | Robert Rawson - 1856 - 178 sider
...which has an obtuse angle. . An acute-angled triangle is that which has three acute s\ angles. " 7\ Of four-sided figures, a square is that which has...angles right angles, but has not all its sides equal. xxxn. A rhombus is that which has all its sides equal, but its angles are not right angles. XXXIII.... | |
 | Charles W. Hackley - 1856 - 530 sider
...inches, <fcc, | Mensuration of Superficies. Square. Rectangle. :B A SQUARE is a quadrilateral figure, which has all its sides equal, and all its angles right angles. A RECTANGLE is a four-sided figure, which has its angles, right angles, and its opposite sides parallel.... | |
 | Charles Haslett - 1855 - 544 sider
...cubic feet, inches, <iu. mensuration of Superficies. Rectangle. A SQUARE is a quadrilateral figure, which has all its sides equal, and all its angles right angles. A RECTANGLE is a four-sided figure, which has its angles, right angles, and its opposite sides parallel.... | |
| |
A rhomboid, is that which has its opposite sides equal to one another, but all its sides are not equal, nor its angles right angles. 
