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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Αποτελέσματα 1 - 5 από τα 6.
Σελίδα 18
F one side of a triangle be produced , the exterior argle is greater than either of
the interior oppofite angles . Let ABC be a triangle , and let its fide BC be
produced to D. the exterior angle ACD is greater than either of the interior
opposite angles ...
F one side of a triangle be produced , the exterior argle is greater than either of
the interior oppofite angles . Let ABC be a triangle , and let its fide BC be
produced to D. the exterior angle ACD is greater than either of the interior
opposite angles ...
Σελίδα 48
IF F 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 half of the line bisected , is equal to the square of the straight
line ...
IF F 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 half of the line bisected , is equal to the square of the straight
line ...
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 bifected , and of the square of the line made up of ...
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 bifected , and of the square of the line made up of ...
Σελίδα 152
Ir the outward angle of a triangle made by producing one of its sides , be divided
into two equal angles , by a straight line which also cuts the base produced ; the
segments between the dividing line and the extremities of the base have the ...
Ir the outward angle of a triangle made by producing one of its sides , be divided
into two equal angles , by a straight line which also cuts the base produced ; the
segments between the dividing line and the extremities of the base have the ...
Σελίδα 202
For , if it is not , EF , GH shall meet , if produced , either on the side of FH , or LG .
first , let them be produced on the side of TH , and meet in the point K. therefore
since EFK is in the piane Ab , every point in EFK is in that plane ; and K is a point
...
For , if it is not , EF , GH shall meet , if produced , either on the side of FH , or LG .
first , let them be produced on the side of TH , and meet in the point K. therefore
since EFK is in the piane Ab , every point in EFK is in that plane ; and K is a point
...
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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...