A new supplement to Euclid's Elements of geometry, by the author of 'A new introduction to the mathematics'. |
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Page 27
Joseph Denison. a hexagon inscribed in the given circle ; then will the ... radius ; which ( Corollary 4 , Euclid , 15 ) is equal to de , one of the sides of ... abcd be the given square ; it is required to describe a square which shall ...
Joseph Denison. a hexagon inscribed in the given circle ; then will the ... radius ; which ( Corollary 4 , Euclid , 15 ) is equal to de , one of the sides of ... abcd be the given square ; it is required to describe a square which shall ...
Page 44
... circle . Let abcd be the given circle ; it is re- quired to describe a circle whose area shall be the double of the area of the circle abcd . a h 9 a In the given circle inscribe the square abcd ( 4 Euclid , 6 ) ; and about the given ...
... circle . Let abcd be the given circle ; it is re- quired to describe a circle whose area shall be the double of the area of the circle abcd . a h 9 a In the given circle inscribe the square abcd ( 4 Euclid , 6 ) ; and about the given ...
Page 45
... circle abcd . Join bd ; bd will be the diameter of the inner circle abcd , and equal to each of the sides of the outer square efgh ; and join eg , a diameter of the greater circle efgh . And because the square of eg , the hypothenuse ...
... circle abcd . Join bd ; bd will be the diameter of the inner circle abcd , and equal to each of the sides of the outer square efgh ; and join eg , a diameter of the greater circle efgh . And because the square of eg , the hypothenuse ...
Page 46
... circle , and is equal to a side of the square described about the circle . PROPOSITION XXVI . - PROBLEM . From a given circle to cut off a circle equal to half the given circle . Let abcd be the given circle ; it is required to cut off from ...
... circle , and is equal to a side of the square described about the circle . PROPOSITION XXVI . - PROBLEM . From a given circle to cut off a circle equal to half the given circle . Let abcd be the given circle ; it is required to cut off from ...
Page 47
Joseph Denison. Because the square of the diameter of any circle is double the square inscribed in the circle ( Corol- lary to Proposition 25 , Supplement ) , the square of the diameter ac is double the square abcd ; and because the ...
Joseph Denison. Because the square of the diameter of any circle is double the square inscribed in the circle ( Corol- lary to Proposition 25 , Supplement ) , the square of the diameter ac is double the square abcd ; and because the ...
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Common terms and phrases
ae is equal angle abc angle acb angle bad angles cab arc adc bisected centre circle abcd circle age circle klmn clid contains 30 Corollary demonstrated describe a square describe the circle describe the square diagonal diameter ac double the square duplicate ratio equal angles equal sides equal to 60 equal to half equi equilateral triangle given circle abd given circle efgh given line given right line given square abcd half the given hexagon homologous sides hypothenuse isosceles triangle join Let abcd multiple octuple Proposition 14 quadruple the square radii radius ac rectangles ac remaining angle right-angle acb Scholium sextuple side ab side ac similar polygon inscribed similar triangles spaces described square abfg square bdih square described square efgh square gikl square of ac subtend Supplement triangle abc trigon abc trigon inscribed triple the square trisected vertical angle wherefore the angle wherefore the square
Popular passages
Page 62 - Similar triangles are to one another in the duplicate ratio of their homologous sides.
Page 5 - The areas of two similar triangles are to one another as the squares of their homologous or similarly situated sides (fig.
Page 41 - PROP. XV. THEOR. Magnitudes have the same ratio to one another which their equimultiples have. Let AB be the same multiple of C, that DE is of F: C shall be to F, as AB to DE.
Page 63 - Ratios that are the same to the same ratio, are the same to one another.
Page 39 - F is of B, and that magnitudes have the same ratio to one another which their equimultiples have; (v.
Page 13 - PQ the given straight line, and A the given point in it. It Is required to describe a circle to touch ihe 0 DEB, and also to touch PQ at A.
Page 56 - In any triangle the square on a side opposite to an acute angle is less than the sum of the squares on the sides which contain the acute angle ; (e}. In an obtuse-angled triangle the square on the side subtending the obtuse angle is greater than the sum of the squares on the sides containing...
Page 57 - PROPOSITION 20. In a circle the angle at the centre is double of the angle at the circumference, when the angles have the same circumference as base.
Page 63 - CE equal to the ratio of the square of AB to the square of AD.
Page 61 - And in continued proportions, the square of the mean is equal to the rectangle contained by the extremes.