The Elements of Euclid: Viz, the First Six Books, Together with the Eleventh and Twelfth ; the Errors, by which Theon, Or Others, Have Long Ago Vitiated These Books, are Corrected, and Some of Euclid's Demonstrations are Restored ; Also the Book of Euclid's Data, in Like Manner CorrectedDesilver, 1829 - 516 sider |
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Side 8
... angles are at one point B , any one of them is expressed by three letters , of which the letter that is ' at the ... right angle : and the straight line which stands on the other is called a perpendicular to it . XI . An obtuse angle is that ...
... angles are at one point B , any one of them is expressed by three letters , of which the letter that is ' at the ... right angle : and the straight line which stands on the other is called a perpendicular to it . XI . An obtuse angle is that ...
Side 10
... right angle . XXVIII . An obtuse - angled triangle , is that which has an obtuse angle . XXIX . An acute - angled triangle , is that which has three acute angles ... angles right angles . XXXI . An oblong , is that which has all its angles ...
... right angle . XXVIII . An obtuse - angled triangle , is that which has an obtuse angle . XXIX . An acute - angled triangle , is that which has three acute angles ... angles right angles . XXXI . An oblong , is that which has all its angles ...
Side 20
... 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 it : it is required to draw a straight line from the point C at right angles to AB . * F Take any point D ...
... 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 it : it is required to draw a straight line from the point C at right angles to AB . * F Take any point D ...
Side 21
... angles equal to one another , each of them is a right angle , and the straight line which stands upon the other is called a perpendicular to it ; therefore from the given point C a perpendicular CH has been drawn to the given straight ...
... angles equal to one another , each of them is a right angle , and the straight line which stands upon the other is called a perpendicular to it ; therefore from the given point C a perpendicular CH has been drawn to the given straight ...
Side 22
... right angles ( 11. 1. ) to CD ; therefore the angles CBE , EBD are two right angles ; ( def . 10. ) and because CBE is equal to the two angles CBA , ABE together , add the angle . EBD to each of these equals ; therefore the angles CBE ...
... right angles ( 11. 1. ) to CD ; therefore the angles CBE , EBD are two right angles ; ( def . 10. ) and because CBE is equal to the two angles CBA , ABE together , add the angle . EBD to each of these equals ; therefore the angles CBE ...
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The Elements of Euclid: Viz, the First Six Books, Together with the Eleventh ... Robert Simson,Euclid Euclid Ingen forhåndsvisning tilgjengelig - 2018 |
Vanlige uttrykk og setninger
altitude angle ABC angle BAC base BC BC is equal BC is given bisected centre circle ABCD circumference co-sine cone cylinder demonstrated described diameter draw drawn equal angles equiangular equimultiples Euclid ex æquali excess fore given angle given in magnitude given in position given in species given magnitude given ratio given straight line gnomon greater join less Let ABC multiple parallel parallelogram parallelogram AC perpendicular point F polygon prism proportionals proposition Q. E. D. PROP radius ratio of AE rectangle CB rectangle contained rectilineal figure remaining angle right angles segment sides BA similar sine solid angle solid parallelopipeds square of AC straight line AB straight line BC tangent THEOR third triangle ABC triplicate ratio vertex wherefore
Populære avsnitt
Side 9 - Let it be granted that a straight line may be drawn from any one point to any other point.
Side 81 - The angles in the same segment of a circle are equal to one another.
Side 315 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.
Side 33 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 49 - 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 96 - 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.
Side 155 - 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 22 - ANY two angles of a triangle are together less than two right angles.
Side 25 - Let A, B, C be the three given straight lines, of which any two whatever are greater than the third, viz.
Side 24 - Any two sides of a triangle are together greater than the third side.