Study of Steam and the Marine Engine for Young Sea Officers in H.M. Navy, the Merchant Navy, Etc: Being a Complete Initiation Into a Knowledge of Principles and Their Application to PracticeLongmans, 1862 - 179 páginas |
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Página 28 - IF two straight lines cut one another, the vertical, or opposite, angles shall be equal.
Página 27 - The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles.
Página 21 - A plane angle is the inclination of two lines to one " another in a plane, which meet together, but are not
Página 29 - IN a right-angled triangle, if a perpendicular be drawn from the right angle to the base, the triangles on each side of it are similar to the whole triangle, and to one another.
Página 31 - IF a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are equal to two right angles.
Página 40 - The angle at the centre of a circle is double the angle at the circumference on the same arc.
Página 39 - As any one side, Is to the sine of its opposite angle ; So is any other side, To the sine of its opposite angle.
Página 29 - The greater angle of every triangle is subtended by the greater side, or has the greater side opposite to it.
Página 13 - Hence, if either of these equal products be divided by one of the mean terms the quotient will be the other.
Página 13 - ... for the second term, and the greater for the first ; and in either case multiply the second and third terms together, and divide the product by the first for the answer, which will always be of the same denomination as the third term.