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 215
Because the solid angle at A is contained by the three plane angles BAD , BAE ,
EAD which , by the hypothesis , are equal to the plane angles LKN , LKO , OKN
which contain the solid angle at K , each to each ; therefore the solid angle at A is
...
Because the solid angle at A is contained by the three plane angles BAD , BAE ,
EAD which , by the hypothesis , are equal to the plane angles LKN , LKO , OKN
which contain the solid angle at K , each to each ; therefore the solid angle at A is
...
Σελίδα 218
Book XI . multiplc soever the base LF is of the base AF , the fame multiple is the
solid LV of the solid AV . for the same ... T a given point in a given straight line , to
make a solid angle equal to a given folid angle contained by three plane angles .
Book XI . multiplc soever the base LF is of the base AF , the fame multiple is the
solid LV of the solid AV . for the same ... T a given point in a given straight line , to
make a solid angle equal to a given folid angle contained by three plane angles .
Σελίδα 220
Book XI . point in a given straight line a solid angle has been made equal to a
given solid angle contained by three plane angles . Which was to be done .
PROP . XXVII . PROB . O describe from a given straight line a solid
parallelepiped ...
Book XI . point in a given straight line a solid angle has been made equal to a
given solid angle contained by three plane angles . Which was to be done .
PROP . XXVII . PROB . O describe from a given straight line a solid
parallelepiped ...
Σελίδα 238
A to B , as B to C. The solid described from A , B , C is equal to the equilateral fold
described from B , equiangular to the other . Take a solid angle D contained by
three plane ancies EDF , FDG , GDE ; and make each of the straight lines ED ...
A to B , as B to C. The solid described from A , B , C is equal to the equilateral fold
described from B , equiangular to the other . Take a solid angle D contained by
three plane ancies EDF , FDG , GDE ; and make each of the straight lines ED ...
Σελίδα 338
11. equal to the angles C , D , E , each to each ' . and by Prop . 26.11 .
A E C F D M G4 H . at the point F in the straight line FG a solid angle may be
made equal to that which is contained by the three plane angles that are equal to
the angles C ...
11. equal to the angles C , D , E , each to each ' . and by Prop . 26.11 .
A E C F D M G4 H . at the point F in the straight line FG a solid angle may be
made equal to that which is contained by the three plane angles that are equal to
the angles C ...
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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...