 The sum of the three angles of every plane triangle being equal to half a circle, or 180 degrees, it therefore follows that if either acute angle, in such triangle, be taken from 90°, the remainder will be the other acute angle, or the complement. The...  The Mining Magazine: Devoted to Mines, Mining Operations, Metallurgy, &c., &c - Pagina 3591857Volledige weergave - Over dit boek
 | Thomas Keith - 1810 - 478 pagina’s
...every plane triangle Is equal to 180°, hence in a right angled plane triangle, if either acute angle be taken from 90°, the remainder will be the other acute angle. % (Y) The complement of an arc, or angle less than 90°, is what that angle wants of a quadrant, or... | |
 | Thomas Keith - 1826 - 504 pagina’s
...every plane triangle is equal to 180°, hence in a right angled plane triangle, if either acute angle be taken from 90°, the remainder will be the other acute angle. (Y) The complement of an arc, or angle less than 90°, is what that angle wants of a quadrant, or 90°.... | |
 | Thomas Keith - 1839 - 498 pagina’s
...every plane triangle is equal to 180°; hence in a right-angled plane triangle, if either acute angle be taken from 90°, the remainder will be the other acute angle. (69) The complement of an arc, or angle less than 90°, is what that angle wants of a quadrant, or... | |
 | John Budge - 1845 - 250 pagina’s
...as are composed of straight lines. The theory of triangles is the very foundation of all geometrical knowledge, for all straight-lined figures may be reduced...one angle is always equal to the sum of the other two. A few other properties of right-angled triangles may be worthy of notice, viz.: when the angle... | |
 | John Budge - 1845 - 248 pagina’s
...triangle has the greater angle opposite to it. The squares of two sides of a triangle are together dpuble of the square of half the base, and of the square...one angle is always equal to the sum of the other two. A few other properties of right-angled triangles may be worthy of notice, viz. : when the angle... | |
 | John Budge - 1854 - 248 pagina’s
...of straight lines. » The theory of triangles is the very foundation of all geometrical knoAvledge, for all straight-lined figures may be reduced to triangles....one angle is always equal to the sum of the other two. A few other properties of right-angled triangles may be worthy of notice, viz. : when the angle... | |
 | John Budge - 1858 - 224 pagina’s
...which the figure is supposed to stand is called the base, and the remaining side the perpendicular." The greater side of every triangle has the greater...one angle is always equal to the sum of the other two. A few other properties of right-angled triangles may be worthy of notice, viz. : when the angle... | |
 | John Budge - 1860 - 214 pagina’s
...half the base, and of the square of a straight line drawn from the vertex to bisect the base. The-sum of the three angles of every plane triangle being...one angle is always equal to the sum of the other two. A few other properties of right-angled triangles may be worthy of notice, viz.: when the angle... | |
 | Samuel Harries Daddow, Benjamin Bannan - 1866 - 820 pagina’s
...triangle has the greater angle opposite to it. The squares of two sides of a triangle are together double the square of half the base, and of the square of...one angle is always equal to the sum of the other two. A few other properties of right-angled triangles may be worthy of notice, viz.: when the angle... | |
 | Samuel Harries Daddow, Benjamin Bannan - 1866 - 824 pagina’s
...half the base, and of the square of a straight line drawn from the vertex to bisect the base. The gum of the three angles of every plane triangle being...one angle is always equal to the sum of the other two. A few other properties of right-angled triangles may be worthy of notice, viz. : when the angle... | |
| |
