A Concise System of Mathematics ...Oliver & Boyd, 1830 - 120 páginas |
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Página 76
... perpendicular to CD . 10. A RIGHT ANGLE is that made by a per- pendicular , as CBG . 11. An OBTUSE ANGLE is greater than a right angle , as HKI . C -D A C B D IG C B H K 12. An ACUTE ANGLE is less than a right angle 76 PRACTICAL GEOMETRY .
... perpendicular to CD . 10. A RIGHT ANGLE is that made by a per- pendicular , as CBG . 11. An OBTUSE ANGLE is greater than a right angle , as HKI . C -D A C B D IG C B H K 12. An ACUTE ANGLE is less than a right angle 76 PRACTICAL GEOMETRY .
Página 77
... perpendicular to one another , they divide both the circle and the circumference into four equal a parts , and form four right angles at the centre ; and if the arc CB of one of these parts be di- vided into 90 degrees , and radii drawn ...
... perpendicular to one another , they divide both the circle and the circumference into four equal a parts , and form four right angles at the centre ; and if the arc CB of one of these parts be di- vided into 90 degrees , and radii drawn ...
Página 82
Alexander Ingram. draw AC perpendicular to AB , and on it lay any small dis- tance 10 times , and through the points of division draw parallels to AB , and through the great divisions of AB draw parallels to AC ; divide AD and CO each ...
Alexander Ingram. draw AC perpendicular to AB , and on it lay any small dis- tance 10 times , and through the points of division draw parallels to AB , and through the great divisions of AB draw parallels to AC ; divide AD and CO each ...
Página 83
... perpendicular E to AC . It is the mean proportional , for A DBP C AB : BE :: BE : BC . NOTE . Make AP AE , then AP or AE is a mean proportional between AC and AB ; therefore AC : AB :: AC2 : AP2 . PROB . XIV . To bisect a given angle ...
... perpendicular E to AC . It is the mean proportional , for A DBP C AB : BE :: BE : BC . NOTE . Make AP AE , then AP or AE is a mean proportional between AC and AB ; therefore AC : AB :: AC2 : AP2 . PROB . XIV . To bisect a given angle ...
Página 85
... perpendicular is to be drawn . PROB . XXII . To make a rectangle , of which the sides are given ; suppose 428 and 246 feet . Draw AC perpendicular to AB , and make AB 428 , and AC 246 feet ; and with 246 for a radius , from B describe ...
... perpendicular is to be drawn . PROB . XXII . To make a rectangle , of which the sides are given ; suppose 428 and 246 feet . Draw AC perpendicular to AB , and make AB 428 , and AC 246 feet ; and with 246 for a radius , from B describe ...
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Términos y frases comunes
9 inches ABCD angle ABC axes axis balls base breadth cask centre chord circle circumference Cosine Cotang cubic feet cubic inches curve cylinder Degrees depth diagonal diameter difference directrix distance divided divisor draw ellipse equal feet 6 inches feet long field field-book find the area fleur-de-lis fluxion foot frustum Gauge-Points girt given hyperbola hypotenuse imperial gallons inches broad logarithm mean proportional measured multiply opposite parabola parallel perches perpendicular poles PROB PROP quantity quotient radius ratio rectangle Required the area Required the content Required the height right angles right ascension RULE segment side AC solid specific gravity spherical triangle square root square yard station straight line subtract taken Tang tangent Theodolite thickness triangle ABC ullage wet inches
Pasajes populares
Página 30 - In each succeeding term the coefficient is found by multiplying the coefficient of the preceding term by the exponent of a in that term, and dividing by the number of the preceding term.
Página 19 - Divide the first term of the dividend by the first term of the divisor, and write the result as the first term of the quotient. Multiply the whole divisor by the first term of the quotient, and subtract the product from the dividend.
Página 58 - The sum of any number of terms in arithmetical progression is equal to the sum of the extremes multiplied by half the number of terms.
Página 335 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Página 336 - 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.
Página 19 - Powers of the same quantity are divided by subtracting the exponent of the divisor from that of the dividend ; the remainder is the exponent of the quotient.
Página 58 - In any series of numbers in arithmetical progression, the sum of the two extremes is equal to the sum of any two terms equally distant from them; as in the latter of the above series 6 + 1=4+3, and =5+2.
Página 13 - C, indicates that the sum of A and B is to be multiplied by C ; and (A + B) -=- C, indicates that the sum of A and B is to be divided by C.
Página 130 - So IS THE AREA OF THE CIRCLE, TO THE AREA OF THE SECTOR.
Página 141 - ... containing ten pounds avoirdupois weight of distilled water, weighed in air, at the temperature of 62...