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Algebra arithmetical progression axis base biquadratic equation bisected called centre chord circle circumference co-sec co-sine co-tangent common compasses Conic Sections conjugate hyperbola contained cube cubic cubic equation curve demonstration described diameter difference distance divided divisors draw drawn ellipse equal equiangular Euclid Euclid's Elements Examples.—1 former fourth Geometry given equation given ratio greater Hence hyperbola infinite series latter latus rectum less likewise logarithms magnitude manner measure method multiplied number of terms odd number ordinate parabola parallel parallelogram perpendicular plane polygon problem prop proportionals proposed proposition Q. E. D. Cor quadrant quotient radius rectangle rectilineal figures roots rule scale secant shewn sides square straight line substituted subtracted tangent theor theorem third unknown quantity versed sine whence wherefore whole numbers
Seite 312 - If a straight line touch a circle, and from the point of contact a chord be drawn, the angles which this chord makes with the tangent are equal to the angles in the alternate segments.
Seite 281 - TO a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Seite 66 - If four magnitudes are proportional, the sum of the first and second is to their difference as the sum of the third and fourth is to their difference.
Seite 397 - In the same way it may be proved that a : b : : sin. A : sin. B, and these two proportions may be written a : 6 : c : : sin. A : sin. B : sin. C. THEOREM III. t8. 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. By Theorem II. we have a : b : : sin. A : sin. B.
Seite 266 - But things which are equal to the same are equal to one another...
Seite 290 - If a straight line be bisected, and produced to any point ; the rectangle contained by the whole line thus produced, and the part of it produced, together with the square of half the line bisected, is equal to the square of the straight line which is made up of the half and the part produced.
Seite 188 - Take the first term from the second, the second from the third, the third from the fourth, &c. and the remainders will form a new series, called the first order of
Seite 301 - II. Two magnitudes are said to be reciprocally proportional to two others, when one of the first is to one of the other magnitudes as the remaining one of the last two is to the remaining one of the first.