The Elements of Geometry, Symbolically Arranged |
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Seite 88
... ratio is the relation which two such quan- tities have to each other , determined by con- sidering what fractional part one is of the other when both quantities are numerically ex- pressed ; as one line is compared with another , by ...
... ratio is the relation which two such quan- tities have to each other , determined by con- sidering what fractional part one is of the other when both quantities are numerically ex- pressed ; as one line is compared with another , by ...
Seite 89
... ratio of these quantities may be expressed as before by the fraction - a DEF . 2 . -A proportion consists of 2 equal ratios . Or if , of four quantities ; the first contains the second , or part of the second , as often as the third ...
... ratio of these quantities may be expressed as before by the fraction - a DEF . 2 . -A proportion consists of 2 equal ratios . Or if , of four quantities ; the first contains the second , or part of the second , as often as the third ...
Seite 92
... ratio as the quantities themselves . Let ma and mb be equimultiples of a and b ; then will ab :: ma : mb . a ma For - b mb That is , a b :: ma : mb . : PROP . LXXI . THEOR . 1. 6 Eu . Triangles and parallelograms of the same alti- tude ...
... ratio as the quantities themselves . Let ma and mb be equimultiples of a and b ; then will ab :: ma : mb . a ma For - b mb That is , a b :: ma : mb . : PROP . LXXI . THEOR . 1. 6 Eu . Triangles and parallelograms of the same alti- tude ...
Seite 98
... ratio which the arcs on which they stand have to each other . In the any No. of ABD , whose centre is L , take s DLK , KLI , ILH , & c .; then DLC : CLB . shall arc DC : arc CB :: A B D K IHC Sinces DLK , KLI , & c . = ... 98 GEOMETRY .
... ratio which the arcs on which they stand have to each other . In the any No. of ABD , whose centre is L , take s DLK , KLI , ILH , & c .; then DLC : CLB . shall arc DC : arc CB :: A B D K IHC Sinces DLK , KLI , & c . = ... 98 GEOMETRY .
Seite 103
... ratio as their altitudes , or perpendicu- lars upon the bases from the opposite and equal angles . Let the As ABC , DEF have the s A , B , C of the one A , respectively equal to the Ls D , E , F of the other ; draw AG BC and DHL EF ...
... ratio as their altitudes , or perpendicu- lars upon the bases from the opposite and equal angles . Let the As ABC , DEF have the s A , B , C of the one A , respectively equal to the Ls D , E , F of the other ; draw AG BC and DHL EF ...
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The Elements of Geometry, Symbolically Arranged Great Britain Admiralty Keine Leseprobe verfügbar - 2016 |
Häufige Begriffe und Wortgruppen
ABCD AC² angle contained base base BC bisect called centre circle circumference coincides common Constr descr described diam diameter dist divided draw equal equal angles equiangular equilat expressed extremities falls figure given point given straight line gnomon greater half isosceles join less Let ABC line drawn manner mean meet oppo opposite angle opposite sides parallel parallelogram pass perpendicular plane polygon PROB prod produced Prop proportional proposition proved quantities ratio rect rectangle contained rectilineal remain right angles segments shown sides square THEOR touch triangle unequal Wherefore Нур
Beliebte Passagen
Seite 58 - If a straight line be divided into two equal parts, and also into two unequal parts; the rectangle contained by the unequal parts, together with the square of the line between the points of section, is equal to the square of half the line.
Seite 32 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz. either the sides adjacent to the equal...
Seite 60 - 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...
Seite 36 - Wherefore, if a straight line, &c. QB D. PROPOSITION XXVIII. THEOB.—-If a straight line, falling upon two other straight lines, make the exterior angle equal to...
Seite 61 - If a straight line be divided into any two parts, the squares of the whole line, and of one of the parts, are equal to twice the rectangle contained by the whole and that part, together with the square of the other part. Let the straight line AB be divided into any two parts in the point C ; the squares of AB, BC are equal to twice the rectangle AB, BC, together with the square of AC.
Seite 21 - If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line.
Seite 37 - IF a straight line fall upon two parallel straight lines, it makes the alternate angles equal to one another; and the exterior angle equal to the interior and opposite upon the same side; and likewise the two interior angles upon the same side together equal to two right angles...
Seite 3 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another : XVI.
Seite 77 - If a straight line touch a circle, and from the point of contact a straight line be drawn cutting the circle, the angles which this line makes with the line touching the circle, shall be equal to the angles which are in the alternate segments of the circle.
Seite 19 - To draw a straight line perpendicular to a given straight line of an unlimited length, from a given point without it.