The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The first six books, together with the eleventh and twelfth |
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Side 113
In proportionals , the antecedent terms are called homologous to one another , as
also the consequents to one another . Geometers make use of the following
technical words to signify certain ways of changing either the order or magnitude
of ...
In proportionals , the antecedent terms are called homologous to one another , as
also the consequents to one another . Geometers make use of the following
technical words to signify certain ways of changing either the order or magnitude
of ...
Side 132
See N. magnitudes taken jointly be proportionals , they shall also be
proportionals when taken separately , that is , if two magnitudes togetlter have to
one of them , the same ratio which two others have to one of these , the
remaining one of the ...
See N. magnitudes taken jointly be proportionals , they shall also be
proportionals when taken separately , that is , if two magnitudes togetlter have to
one of them , the same ratio which two others have to one of these , the
remaining one of the ...
Side 164
IF F four straight lines be proportionals , the rectangle contained by the extremes
is equal to the rectangle contained by the means , and if the rectangle contained
by the extremes be equal to the rectangle contained by the means , the four ...
IF F four straight lines be proportionals , the rectangle contained by the extremes
is equal to the rectangle contained by the means , and if the rectangle contained
by the extremes be equal to the rectangle contained by the means , the four ...
Side 171
R Let each of the rectilineal figures A , B be similar to the rectilineal figure C. the
figure A is similar to the figure B. Because A is similar to C , they are equiangular ,
and also have their fides about the equal angles proportionals 2.
R Let each of the rectilineal figures A , B be similar to the rectilineal figure C. the
figure A is similar to the figure B. Because A is similar to C , they are equiangular ,
and also have their fides about the equal angles proportionals 2.
Side 239
THEOR 1 I TF four straight lines be proportionals , the similar solid See N ,
parallelepipeds similarly described from them shall also be proportionals . and if
the similar parallelepipeds similarly described from four straight lines be
proportionals ...
THEOR 1 I TF four straight lines be proportionals , the similar solid See N ,
parallelepipeds similarly described from them shall also be proportionals . and if
the similar parallelepipeds similarly described from four straight lines be
proportionals ...
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added alſo altitude angle ABC angle BAC baſe becauſe Book Book XI caſe circle circle ABCD circumference common cone cylinder Definition demonſtrated deſcribed diameter divided double draw drawn equal equal angles equiangular equimultiples exceſs fame fides firſt folid fore four fourth given angle given in poſition given in ſpecies given magnitude given ratio given ſtraight line greater Greek half join leſs likewiſe magnitude manner meet muſt oppoſite parallel parallelogram perpendicular plane priſm produced PROP proportionals Propoſition pyramid radius reaſon rectangle rectangle contained remaining right angles ſame ſecond ſegment ſhall ſhewn ſides ſimilar ſolid ſphere ſquare ſquare of AC taken THEOR theſe third thro triangle ABC wherefore whole
Populære avsnitt
Side 157 - D ; wherefore the remaining angle at C is equal to the remaining angle at F ; Therefore the triangle ABC is equiangular to the triangle DEF. Next, let each of the angles at C, F be not less than a right angle ; the triangle ABC is also, in this case, equiangular to the triangle DEF.
Side 24 - ... be equal, each to each ; and also the third angle of the one to the third angle of the other. Let ABC, DEF be two triangles which have the angles ABC, ECA equal to the angles DEF, EFD, viz.
Side 45 - 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 73 - THE straight line drawn at right angles to the diameter of a circle, from the extremity of...
Side 163 - 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 81 - ELF. Join BC, EF ; and because the circles ABC, DEF are equal, the straight lines drawn from their centres are equal: therefore the two sides BG, GC, are equal to the two EH, HF ; and the angle at G is equal to the angle at H ; therefore the base BC is equal (4.
Side 323 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.
Side 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.
Side 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.