A new supplement to Euclid's Elements of geometry, by the author of 'A new introduction to the mathematics'. |
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Page 21
... side bc , which is equal to bh . In like manner it may be demonstrated that the base ai is equal to the base ic ; that is , that ac is bisected in i . And because the angle bic is a right - angle , the square of the hypothenuse be is ...
... side bc , which is equal to bh . In like manner it may be demonstrated that the base ai is equal to the base ic ; that is , that ac is bisected in i . And because the angle bic is a right - angle , the square of the hypothenuse be is ...
Page 22
... side be ; wherefore the square acde is = x ( 43 ) times the square bcfg . 3 ... bc , one of the equal sides . - Q . E. D. PROPOSITION VIII . - THEOREM . Of ... side be is equal to the side ba , and ( by the bisection ) 22 A NEW SUPPLEMENT.
... side be ; wherefore the square acde is = x ( 43 ) times the square bcfg . 3 ... bc , one of the equal sides . - Q . E. D. PROPOSITION VIII . - THEOREM . Of ... side be is equal to the side ba , and ( by the bisection ) 22 A NEW SUPPLEMENT.
Page 35
... bc , and in the circle deg , because the angles abc and dec are equal ; wherefore ( by 1 Euclid , 4 ) the base or side hi is equal to the base or side de . Corollary 2. - If the triangle dce is applied to the triangle abc in the manner ...
... bc , and in the circle deg , because the angles abc and dec are equal ; wherefore ( by 1 Euclid , 4 ) the base or side hi is equal to the base or side de . Corollary 2. - If the triangle dce is applied to the triangle abc in the manner ...
Page 36
... sides bc , ac are cut proportionally in the points and h ; wherefore ( 6 Euclid , 2 ) the right lines ab , hi are parallel . Scholium . - The triangles acb and hci are equi- angular . PROPOSITION XVII . - THEOREM . A side of any polygon ...
... sides bc , ac are cut proportionally in the points and h ; wherefore ( 6 Euclid , 2 ) the right lines ab , hi are parallel . Scholium . - The triangles acb and hci are equi- angular . PROPOSITION XVII . - THEOREM . A side of any polygon ...
Page 37
... side or radius ce may coincide with the radius he lying within the side ac ; and that the radius cd may coincide with the radius ic lying within the side bc ; and join ih ; ih is equal to de ( Corollary 1 , to Proposi- tion 16 ...
... side or radius ce may coincide with the radius he lying within the side ac ; and that the radius cd may coincide with the radius ic lying within the side bc ; and join ih ; ih is equal to de ( Corollary 1 , to Proposi- tion 16 ...
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A New Supplement to Euclid's Elements of Geometry, by the Author of 'a New ... Joseph Denison No preview available - 2015 |
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.