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acres added base body breadth bushels called cent centre chord circle circumference common contained Cosec Cosine Cotang course cube depth describe diameter difference distance divided divisor draw drawn equal equation EXAMPLE EXERCISES feet field figure Find the area four fraction frustum gallons gauge given gives greater half height hence inches join latitude length less logarithm marked mean measure meet miles Multiply Note objects opposite parallel perpendicular plane poles prism PROBLEM Prop proportional PROPOSITION pyramid quantity quotient radius ratio rectangle Reduce remainder right angles root RULE Secant segment sides similar sine solidity square station straight line subtract surface taken Tang third triangle whole yards
Página 124 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Página 115 - The first of four magnitudes is said to have the same ratio to the second, which the third has to the fourth, when any equimultiples whatsoever of the first and third being taken, and any equimultiples whatsoever of the second and fourth; if the multiple of the first be less than that of the second, the multiple of the third is also less than that of the fourth : or...
Página 79 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Página 80 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a Right Angle; and the straight line which stands on the other is called a Perpendicular to it.
Página 84 - ... is supposed . to be divided into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are designated respectively, by the characters ° ' ". For example, ten degrees, eighteen minutes, and fourteen seconds, would be written 10° 18
Página 80 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 136 - To draw a straight line perpendicular to a plane, from a given point above it. Let A be the given point above the plane BH ; it is required to draw from the point A a straight line perpendicular to the plane BH.
Página 118 - ... of the base, have the same ratio which the other sides of the triangle have to one...