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ABCD apothem Applying logarithms axis base and altitude base multiplied centre chord circle circumference coincide cone consequently convex surface corresponding cosec cosine Cotang cylinder denote diameter distance divided draw drawn equal in volume equal to half find the area Find the logarithmic Formula frustum given angle greater hence homologous hypothenuse included angle inscribed polygon intersection less Let ABC log sin lower base mantissa mean proportional number of sides opposite parallelogram perimeter perpendicular plane MN polar triangle polyedral angle polyedron prism PROPOSITION proved pyramid quadrant radii radius rectangle rectangular parallelopipedon regular polygon right angles right-angled triangle Scholium segment similar sine six right slant height solution sphere spherical angle spherical polygon spherical triangle square straight line Tang tangent THEOREM triangle ABC triangular triangular prisms triedral angle upper base vertex vertices whence
Page 26 - If two triangles have two sides and the included angle of the one, equal to two sides and the included angle of the other, each to each, the two triangles will be equal in all their parts." Axiom 1. "Things which are equal to the same thing, are equal to each other.
Page 124 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Page 4 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Page 102 - The square described on the hypothenuse of a rightangled triangle is equal to the sum of the squares described on the other two sides.
Page 44 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Page 41 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Page 57 - A chord is a straight line joining the extremities of an arc.
Page 16 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, etc.