The first six books of the Elements of Euclid, with numerous exercisesIngram, Cooke, 1853 - 147 Seiten |
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Ergebnisse 1-5 von 13
Seite 2
... semicircle is the figure contained by a diameter and the part of the circumference cut off by the diameter . XIX . A segment of a circle is the figure contained by a straight line , and the circumference it cuts off . XX . Rectilineal ...
... semicircle is the figure contained by a diameter and the part of the circumference cut off by the diameter . XIX . A segment of a circle is the figure contained by a straight line , and the circumference it cuts off . XX . Rectilineal ...
Seite 45
... semicircle bhf , and produce de to h , and join gh : therefore because the straight line bf is divided into two equal parts in the point g , and into two unequal b g مع · d at e , the rectangle be , ef , together with the square of eg ...
... semicircle bhf , and produce de to h , and join gh : therefore because the straight line bf is divided into two equal parts in the point g , and into two unequal b g مع · d at e , the rectangle be , ef , together with the square of eg ...
Seite 59
... semicircle is said to be greater than any acute rectilineal angle , and the remaining angle less than any rectilineal angle . Q. E. D. COR . From this it is manifest , that the straight line which is drawn at right angles to the ...
... semicircle is said to be greater than any acute rectilineal angle , and the remaining angle less than any rectilineal angle . Q. E. D. COR . From this it is manifest , that the straight line which is drawn at right angles to the ...
Seite 61
... semicircle , and join b f . fd : and because the angle bfd is at the centre , and the angle bad at the circumference , and that they have the same part of the circumference , viz . bcd for their base ; b therefore the angle bfd is ...
... semicircle , and join b f . fd : and because the angle bfd is at the centre , and the angle bad at the circumference , and that they have the same part of the circumference , viz . bcd for their base ; b therefore the angle bfd is ...
Seite 62
... semicircle , let bad , bed be angles in it ; these also are equal to one another draw a f to the centre , and produce it to c , and join ce : therefore the segment badc is greater than a semicircle ; and the angles in it bac , bec are ...
... semicircle , let bad , bed be angles in it ; these also are equal to one another draw a f to the centre , and produce it to c , and join ce : therefore the segment badc is greater than a semicircle ; and the angles in it bac , bec are ...
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Häufige Begriffe und Wortgruppen
abcd adjacent angles angle a cb angle abc angle bac angle edf angle equal base bc bc is equal bisected centre circle abc describe diameter double draw equal angles equal straight lines equal to f equimultiples ex æquali exterior angle fore four magnitudes fourth given circle given straight line gnomon greater ratio greater than f ILLUSTRATED LONDON inscribe less LET abc LET the straight likewise multiple opposite angle parallel parallelogram perpendicular produced Q. E. D. PROPOSITION rectangle a d rectangle contained remaining angle right angles segment semicircle shewn square of a c straight line a b straight line ab straight line bc straight line drawn tiple touches the circle triangle abc triangle def twice the rectangle
Beliebte Passagen
Seite 2 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another : XVI.
Seite 42 - To divide a given straight line into two parts, so that the rectangle contained by the whole, and one of the parts, may be equal to the square of the other part.
Seite 4 - Let it be granted that a straight line may be drawn from any one point to any other point.
Seite 21 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.
Seite 29 - To describe a parallelogram that shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Seite 38 - 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 of...
Seite 15 - If, from the ends of the side of a triangle, there be drawn two straight lines to a point within the triangle, these shall be less than, the other two sides of the triangle, but shall contain a greater angle. Let...
Seite 13 - If one side of a triangle be produced, the exterior angle is greater than either of the interior opposite angles.
Seite 4 - If a straight line meet two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...
Seite 126 - 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.