The First Six Books: Together with the Eleventh and Twelfth |
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Side 21
T : O bisect a given rectilineal angle , that is , to divide it into two equal angles . Let BAC be the given rect lineal angle , it is required to bifeet it ...
T : O bisect a given rectilineal angle , that is , to divide it into two equal angles . Let BAC be the given rect lineal angle , it is required to bifeet it ...
Side 22
I. draw a straight line at right angles to a given straight line , from a given point in the same . Let AB be a given straight line , and C a point given in ...
I. draw a straight line at right angles to a given straight line , from a given point in the same . Let AB be a given straight line , and C a point given in ...
Side 23
E to the angle EBA ; in th fame manner , because ABD is a 10. ... PRO B. o draw a straight line perpendicular to a given straight line of an unlimited ...
E to the angle EBA ; in th fame manner , because ABD is a 10. ... PRO B. o draw a straight line perpendicular to a given straight line of an unlimited ...
Side 30
PRO B. A T a given point in a given straight line , to make a rectilineal angle equal to a given rectilineal angle . Let AB be the given straight line ...
PRO B. A T a given point in a given straight line , to make a rectilineal angle equal to a given rectilineal angle . Let AB be the given straight line ...
Side 36
Book I. each of these the angle BGH ; therefore the angles EGB , BGH are ... draw a straight line through a given point paral . a given itraight line . 13.
Book I. each of these the angle BGH ; therefore the angles EGB , BGH are ... draw a straight line through a given point paral . a given itraight line . 13.
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The First Six Books: Together with the Eleventh and Twelfth Euclid Ingen forhåndsvisning tilgjengelig - 2016 |
Vanlige uttrykk og setninger
added alſo altitude angle ABC angle BAC baſe becauſe Book caſe centre circle circle ABCD circumference common cone cylinder definition demonſtrated deſcribed diameter divided double draw drawn equal equal angles equiangular equimultiples exceſs fame fides figure firſt folid fore four fourth given angle given in poſition given in ſpecies given magnitude given ratio given ſtraight line greater Greek half join leſs likewiſe magnitude manner meet muſt oppoſite parallel parallelogram perpendicular plane priſm produced prop proportionals propoſition pyramid reaſon rectangle rectangle contained rectilineal remaining right angles ſame ſecond ſegment ſhall ſides ſimilar ſolid ſphere ſquare ſquare of AC Take taken theſe third triangle ABC wherefore whole
Populære avsnitt
Side 483 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Side 170 - 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.
Side 81 - THE straight line drawn at right angles to the diameter of a circle, from the extremity of...
Side 105 - DEF are likewise equal (13. i.) to two right angles ; therefore the angles AKB, AMB are equal to the angles DEG, DEF, of which AKB is equal to DEG ; wherefore the remaining angle AMB is equal to the remaining angle DEF.
Side 167 - AC the same multiple of AD, that AB is of the part which is to be cut off from it : join BC, and draw DE parallel to it : then AE is the part required to be cut off.
Side 10 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle; and the straight line which stands on the other is called a perpendicular to it.
Side 62 - AB be the given straight line ; it is required to divide it into two parts, so that the rectangle contained by the whole, and one of the parts, shall be equal to the square of the other part.
Side 112 - To describe an equilateral and equiangular pentagon about a given circle. • Let ABCDE be the given circle; it is required to describe an equilateral and equiangular pentagon about the circle ABCDE. Let the angles of a pentagon, inscribed in the circle...
Side 200 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz. either the sides adjacent to the equal...
Side 38 - F, which is the common vertex of the triangles ; that is, together with four right angles. 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.