The school edition. Euclid's Elements of geometry, the first six books, by R. Potts. corrected and enlarged. corrected and improved [including portions of book 11,12]. |
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Resultat 1-5 av 86
Side 8
Let ABC , DEF be two triangles , which have the two sides AB , AC equal to the
two sides DE , DF , each to each , viz . AB to DE , and AC to DF , and the included
angle BAC equal to the included angle EDF . Then shall the base BC be equal to
...
Let ABC , DEF be two triangles , which have the two sides AB , AC equal to the
two sides DE , DF , each to each , viz . AB to DE , and AC to DF , and the included
angle BAC equal to the included angle EDF . Then shall the base BC be equal to
...
Side 9
Let ABC be an isosceles triangle of which the side AB is equal to AC , and let the
equal sides AB , AC be produced to D and E . Then the angle ABC shall be equal
to the angle ACB , and the angle DBC to the angle ECB . In BD take any point F ...
Let ABC be an isosceles triangle of which the side AB is equal to AC , and let the
equal sides AB , AC be produced to D and E . Then the angle ABC shall be equal
to the angle ACB , and the angle DBC to the angle ECB . In BD take any point F ...
Side 10
PROPOSITION VI . THEOREM . If two angles of a triangle be equal to each other ;
the sides also which subtend , or are opposite to , the equal angles , shall be
equal to one another . Let ABC be a triangle having the angle ABC ' equal to the
...
PROPOSITION VI . THEOREM . If two angles of a triangle be equal to each other ;
the sides also which subtend , or are opposite to , the equal angles , shall be
equal to one another . Let ABC be a triangle having the angle ABC ' equal to the
...
Side 12
Let ABC , DEF be two triangles , having the two sides AB , AC , equal to the two
sides DE , DF , each to each , viz . AB to DE , and AC to DF , and also the base
B C equal to the base EF . D G Then the angle BAC shall be equal to the angle
EDF ...
Let ABC , DEF be two triangles , having the two sides AB , AC , equal to the two
sides DE , DF , each to each , viz . AB to DE , and AC to DF , and also the base
B C equal to the base EF . D G Then the angle BAC shall be equal to the angle
EDF ...
Side 16
At the point B in the straight line AB , let the two straight lines BC , BD upon the
opposite sides of AB , make the adjacent angles ABC , ABD together equal to two
right angles . Then BD shall be in the same straight line with BC . с в For , if BD ...
At the point B in the straight line AB , let the two straight lines BC , BD upon the
opposite sides of AB , make the adjacent angles ABC , ABD together equal to two
right angles . Then BD shall be in the same straight line with BC . с в For , if BD ...
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Vanlige uttrykk og setninger
ABCD Algebraically Apply base bisected Book chord circle circumference common construction contained definition demonstrated described diagonals diameter difference distance divided double draw drawn equal equal angles equiangular equilateral triangle equimultiples Euclid extremities fall figure formed four fourth Geometrical given circle given line given point given straight line greater half Hence inscribed intersection isosceles join length less Let ABC line drawn magnitudes manner mean meet multiple parallel parallelogram pass perpendicular plane problem produced Prop proportionals proved Q.E.D. PROPOSITION radius ratio reason rectangle rectangle contained regular remaining respectively right angles segment semicircle shew shewn sides similar solid square straight line taken tangent THEOREM third touch triangle ABC twice units vertex wherefore whole
Populære avsnitt
Side 112 - Guido, with a burnt stick in his hand, demonstrating on the smooth paving-stones of the path, that the square on the hypotenuse of a right-angled triangle is equal to the sum of the squares on the other two sides.
Side 83 - 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...
Side 48 - If two triangles have two sides of the one equal to two sides of the other, each to each ; and...
Side 238 - The first of four magnitudes is said to have the same ratio to the second, which the third has to the fourth, when any equimultiples whatsoever of the first and third being taken, and any equimultiples whatsoever of the second and fourth; if the multiple of the first be less than that of the second, the multiple of the third is also less than that of the fourth...
Side 198 - A LESS magnitude is said to be a part of a greater magnitude, when the less measures the greater, that is, ' when the less is contained a certain number of times exactly in the greater.
Side 271 - SIMILAR triangles are to one another in the duplicate ratio of their homologous sides.
Side 81 - If a straight line be divided into any two parts, the rectangle contained by the whole and one of the parts, is equal to the rectangle contained by the two parts, together with the square of the aforesaid part.
Side 115 - angle in a segment' is the angle contained by two straight lines drawn from any point in the circumference of the segment, to the extremities of the straight line which is the base of the segment.
Side 341 - On the same base, and on the same side of it, there cannot be two triangles...
Side 24 - ... twice as many right angles as the figure has sides ; therefore all the angles of the figure together with four right angles, are equal to twice as many right angles as the figure has sides.