The Elements of Euclid: 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 Corrected. viz. The first six books, together with the eleventh and twelfth |
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Σελίδα 31
I. THE HE opposite sides and angles of parallelograms are equal to one another ,
and the diameter bisects them , that is , divides them into two equal parts . N. B. A
Parallelogram is a four sided figure of which the opposite sides are parallel ...
I. THE HE opposite sides and angles of parallelograms are equal to one another ,
and the diameter bisects them , that is , divides them into two equal parts . N. B. A
Parallelogram is a four sided figure of which the opposite sides are parallel ...
Σελίδα 65
IF any point be taken in the diameter of a circle , which is not the center , of all the
straight lines which can be drawn from it to the circumference , the greatest is that
in which the center is , and the other part of that diameter is the leaft ; and of ...
IF any point be taken in the diameter of a circle , which is not the center , of all the
straight lines which can be drawn from it to the circumference , the greatest is that
in which the center is , and the other part of that diameter is the leaft ; and of ...
Σελίδα 67
The first six books, together with the eleventh and t Robert Simson. least is DG
between the point D and the diameter AG ; and the Book III . nearer to it is always
less than the more remote , viz . DK than DL , and DL than DH . Take M the center
...
The first six books, together with the eleventh and t Robert Simson. least is DG
between the point D and the diameter AG ; and the Book III . nearer to it is always
less than the more remote , viz . DK than DL , and DL than DH . Take M the center
...
Σελίδα 101
6 . straight line which is drawn from the extremity of a diameter , at right angles to
it , touches the circle e , therefore each of the e . 16. 5 . straight lines AB , BC , CD
, DA touches the circle , which therefore is inscribed in the square ABCD .
6 . straight line which is drawn from the extremity of a diameter , at right angles to
it , touches the circle e , therefore each of the e . 16. 5 . straight lines AB , BC , CD
, DA touches the circle , which therefore is inscribed in the square ABCD .
Σελίδα 175
ABCD and AEFG are about the same diameter . For if not , let , if posible , the A G
parallelogram BD have its diameter AHC in a different straight line K from AF the
diameter of the paralH lelogram EG , and let GF meet AHC in H ; and thro'H ...
ABCD and AEFG are about the same diameter . For if not , let , if posible , the A G
parallelogram BD have its diameter AHC in a different straight line K from AF the
diameter of the paralH lelogram EG , and let GF meet AHC in H ; and thro'H ...
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Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.
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Συχνά εμφανιζόμενοι όροι και φράσεις
added alſo altitude angle ABC angle BAC baſe becauſe Book caſe 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 angle fore four fourth given angle given in poſition given magnitude given ratio given ſtraight line greater half join leſs likewiſe magnitude manner meet multiple muſt oppoſite parallel parallelogram perpendicular plane produced PROP proportionals Propoſition pyramid radius reaſon rectangle rectangle contained rectilineal remaining right angles ſame ſecond ſegment ſhall ſides ſimilar ſolid ſphere ſquare ſquare of AC taken THEOR theſe third thro triangle ABC wherefore whole
Δημοφιλή αποσπάσματα
Σελίδα 156 - 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.
Σελίδα 3 - 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.
Σελίδα 323 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.
Σελίδα 92 - If from a point without a circle there be drawn two straight lines, one of which cuts the circle, and the other meets it ; if the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, be equal to the square- of the line which meets it, the line which meets shall touch the circle.
Σελίδα 80 - EA : and because AD is equal to DC, and DE common to the triangles ADE, CDE, the two sides AD, DE are equal to the two CD, DE, each to each ; and the angle ADE is equal to the angle CDE, for each of them is a right angle ; therefore the base AE is equal (4.
Σελίδα 52 - If a straight line be bisected, and produced to any point, the square of the whole line thus produced, and the square of the part of it produced, are together double of the square of half the line bisected, and of the square of the line made up of the half and the part produced.
Σελίδα 36 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Σελίδα 2 - 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.
Σελίδα 54 - 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.
Σελίδα 74 - The straight line drawn at right angles to the diameter of a circle, from the extremity of it, falls without the circle...