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A B C ABCD acute adjacent altitude base called centre chord circle circumference common complement cone consequently contained corresponding cosine Cotang cylinder decimal described determine diagonal diameter difference distance divided draw drawn edge equal equivalent EXAMPLES faces feet figure four frustum given greater hence hypothenuse inches included inscribed joining length less logarithm logarithmic sine magnitudes manner means measured meet middle multiplied negative opposite parallel parallelogram pass perpendicular plane polygon positive prism PROBLEM Prop proportional PROPOSITION pyramid radius ratio rectangle regular remain right angles right-angled triangle rods Scholium secant segment sides similar sine slant height solidity sphere spherical triangle square straight line taken Tang tangent third triangle triangle ABC values yards
Page 28 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Page 79 - Two rectangles having equal altitudes are to each other as their bases.
Page 251 - The convex surface of the cylinder is equal to the circumference of its base multiplied by its altitude (Prop.
Page 52 - If any number of quantities are proportional, any antecedent is to its consequent as the sum of all the antecedents is to the sum of all the consequents. Let a : b = c : d = e :f Now ab = ab (1) and by Theorem I.
Page 35 - If any side of a triangle be produced, the exterior angle is equal to the sum of the two interior and opposite angles.
Page 168 - If a straight line is perpendicular to each of two straight lines at their point of intersection, it is perpendicular to the plane of those lines.
Page 303 - Equal triangles upon the same base, and upon the same side of it, are between the same parallels.
Page 4 - The logarithm of any POWER of a number is equal to the product of the logarithm of the number by the exponent of the power. For let m be any number, and take the equation (Art. 9) M=a*, then, raising both sides to the wth power, we have Mm = (a")m = a"" . Therefore, log (M m) = xm = (log M) X »»12.