A Supplement to the Elements of EuclidG. and W. B. Whittaker, 1819 - 410 Seiten |
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Seite 33
... locus of the bisections of the several hypotenuses is a quadrantal arch of a circle , having the common vertex for its centre , and the half of any hypotenuse for its radius . For , the bisections of the hypotenuses will , each of them ...
... locus of the bisections of the several hypotenuses is a quadrantal arch of a circle , having the common vertex for its centre , and the half of any hypotenuse for its radius . For , the bisections of the hypotenuses will , each of them ...
Seite 208
... locus of equal tangents drawn to two of these given circles ; draw likewise , the straight line , which is the locus of equal tangents drawn to the remaining circle and to either of the two circles first taken : It is manifest that the ...
... locus of equal tangents drawn to two of these given circles ; draw likewise , the straight line , which is the locus of equal tangents drawn to the remaining circle and to either of the two circles first taken : It is manifest that the ...
Seite 303
... locus of all the points , from each of which , if two straight lines be drawn , to the lines containing the given angle , so as always to bè parallel to two straight lines given in position , they shall be to one another in a given ...
... locus of all the points , from each of which , if two straight lines be drawn , to the lines containing the given angle , so as always to bè parallel to two straight lines given in position , they shall be to one another in a given ...
Seite 304
... locus of all the points , from which , if straight lines be drawn to AC and AB , parallel to AL and AK , respectively , they shall be to one another as AL to AK . Through K and L draw ( E. 31. 1. ) KM , and LM , parallel to AB and AC ...
... locus of all the points , from which , if straight lines be drawn to AC and AB , parallel to AL and AK , respectively , they shall be to one another as AL to AK . Through K and L draw ( E. 31. 1. ) KM , and LM , parallel to AB and AC ...
Seite 305
... locus of D K E H C P X L A F I B all the points , from which if straight lines be drawn parallel to AK and AL , they shall cut off from CA and BA two segments , which are always to one another in the same ratio as the given finite ...
... locus of D K E H C P X L A F I B all the points , from which if straight lines be drawn parallel to AK and AL , they shall cut off from CA and BA two segments , which are always to one another in the same ratio as the given finite ...
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
base BC bisect centre chord circle ABC circle described circumference constr decagon describe a circle describe the circle diameter distance divided double draw a straight draw E equi equiangular equilateral and equiangular F draw find a point finite straight line given circle given finite straight given point given ratio given square given straight line half hypotenuse inscribed isosceles less Let AB Let ABC lines be drawn magnitudes manifest manner meet the circumference number of equal number of sides parallel to BC parallelogram pass perimeter polygon PROBLEM produced PROP rectangle contained rectilineal figure remaining sides required to describe required to draw rhombus right angles segment semi-diameter straight line joining subtend tangent THEOREM three given touch the circle trapezium vertex
Beliebte Passagen
Seite 310 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Seite 198 - 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...
Seite 366 - If from the vertical angle of a triangle a straight line be drawn perpendicular to the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the perpendicular and the diameter of the circle described about the...
Seite 92 - If there be two straight lines, one of which is divided into any number of parts, the rectangle contained by the two straight lines is equal to the rectangles contained by the undivided line, and the several parts of the divided line.
Seite 284 - And if the first have a greater ratio to the second, than the third has to the fourth, but the third the same ratio to the fourth, which the fifth has to the sixth...
Seite 349 - Divide a straight line into two parts such that the rectangle contained by the whole line and one of the parts shall be equal to the square on the other part.
Seite 288 - Convertendo, by conversion ; when there are four proportionals, and it is inferred, that the first is to its excess above the second, as the third to its excess above the fourth.
Seite 296 - ... line and the extremities of the base have the same ratio which the other sides of the triangle have to one...
Seite 367 - Wherefore, in equal circles &c. QED PROPOSITION B. THEOREM If the vertical angle of a triangle be bisected by a straight line which likewise cuts the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the segments of the base, together with the square on the straight line which bisects the angle.
Seite 104 - In every triangle, the square of the side subtending any of the acute angles is less than the squares of the sides containing that angle by twice the rectangle contained by either of these sides, and the straight line intercepted between the perpendicular let fall upon it from the opposite angle, and the acute angle. Let ABC be any triangle, and the angle at B one of its acute angles, and upon BC, one of the sides containing it, let fall the perpendicular...