Geometrical Problems Deducible from the First Six Books of Euclid, Arranged and Solved: To which is Added an Appendix Containing the Elements of Plane Trigonometry ...J. Smith, 1821 - 438 σελίδες |
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Αποτελέσματα 1 - 5 από τα 100.
Σελίδα 7
... Let ABC be the given angle , and P the given point , either without or within . In BA take any point A , and take AB : BC in the given ratio . Join AC , and from P draw PDE parallel to AC . PDE is the line required . A D B P E For since ...
... Let ABC be the given angle , and P the given point , either without or within . In BA take any point A , and take AB : BC in the given ratio . Join AC , and from P draw PDE parallel to AC . PDE is the line required . A D B P E For since ...
Σελίδα 8
... Let ABC be the given angle , DE parallel to AB , and P the given point . From P draw PC parallel B3 A D P to DE or AB , and take BE : CF in the given ratio . Join FP and produce it to A ; APF is the line required . For since DE and CP ...
... Let ABC be the given angle , DE parallel to AB , and P the given point . From P draw PC parallel B3 A D P to DE or AB , and take BE : CF in the given ratio . Join FP and produce it to A ; APF is the line required . For since DE and CP ...
Σελίδα 25
... ABC let two lines PB , PD be drawn making equal angles with PO , the line joining P and the centre ; AB shall be equal to CD . E P to F Let fall the perpendiculars OE , OF ; then since the angle at E is equal to the angle at F , and EPO ...
... ABC let two lines PB , PD be drawn making equal angles with PO , the line joining P and the centre ; AB shall be equal to CD . E P to F Let fall the perpendiculars OE , OF ; then since the angle at E is equal to the angle at F , and EPO ...
Σελίδα 26
... Let AD meet the tangent in E. Join EB ; then - ( i . 6. ) AC and CB together are less than AE and EB ; but AE , EB ... ABC , ABD cut each other in A and B ; draw the diameters AC , AD , and join BC , BD ; CB and BD are in the same straight ...
... Let AD meet the tangent in E. Join EB ; then - ( i . 6. ) AC and CB together are less than AE and EB ; but AE , EB ... ABC , ABD cut each other in A and B ; draw the diameters AC , AD , and join BC , BD ; CB and BD are in the same straight ...
Σελίδα 35
... Let AB be the given line in the cir- cle ABC whose centre is 0. Draw the diameter CD at right angles to AB : and taking a line EF which has to AB the given ratio ( Eucl . vi . 12. ) , place it in the circle ABC ; bisect it in G and join ...
... Let AB be the given line in the cir- cle ABC whose centre is 0. Draw the diameter CD at right angles to AB : and taking a line EF which has to AB the given ratio ( Eucl . vi . 12. ) , place it in the circle ABC ; bisect it in G and join ...
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD angle ABC angle equal BC is equal centre chord circle cutting circumference construct the triangle cosecant cosine describe a circle divided equation equiangular Eucl extremities find the value given angle given circle given difference given in position given line given point given ratio given rectangle given square given straight line Hence inscribed intercepted isosceles triangle Join AE least common multiple Let AB Let ABC let fall line given line joining lines be drawn lines drawn mean proportional meeting opposite side parallel to AC parallelogram pendicular point of intersection produced quadrant radius rectangle contained right angles right-angled triangle segments semicircle shewn sine squares of AC tang tangent transposition trapezium triangle ABC triangle required vertex vertical angle whence
Δημοφιλή αποσπάσματα
Σελίδα i - IF a straight line be divided into two equal, and also into two unequal parts ; the squares of the two unequal parts are together double of the square of half the line, and of the square of the line between the points of section.
Σελίδα xi - IF from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it ; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle,. shall be equal to the square of the line which touches it.
Σελίδα 319 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Σελίδα 150 - Iff a straight line be divided into any two parts, four times the rectangle contained by the whole line, and one of the parts, together with the square of the other...
Σελίδα 204 - FC are equal to one another : wherefore the circle described from the centre F, at the distance of one of them, will pass through the extremities of the other two, and be described about the triangle ABC.
Σελίδα 115 - If from a point, without a parallelogram, there be drawn two straight lines to the extremities of the two opposite sides, between which, when produced, the point does not lie, the difference of the triangles thus formed is equal to half the parallelogram. Ex. 2. The two triangles, formed by drawing straight lines from any point within a parallelogram to the extremities of its opposite sides, are together half of the parallelogram.
Σελίδα 14 - In one of the given equations obtain the value of one of the unknown quantities in terms of the other unknown quantity; Substitute this value in the other equation and solve.
Σελίδα 291 - AB describe a segment of a circle containing an angle equal to the given angle, (in.
Σελίδα 297 - Given the vertical angle, the difference of the two sides containing it, and the difference of the segments of the base made by a perpendicular from the vertex ; construct the triangle.
Σελίδα 90 - If from any point in the base of an isosceles triangle perpendiculars...