The First Six Books of the Elements of Euclid: With NotesPrinted at the University Press, for R. Milliken and son, 1833 - 183 páginas |
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Página 7
... equiangular triangle is also equi- lateral ; for whatever side is taken for the base , the angles adjacent to it are equal , and therefore the sides which subtend them . PROP . VII . THEOR . On the same right line ( AB ) and on the same ...
... equiangular triangle is also equi- lateral ; for whatever side is taken for the base , the angles adjacent to it are equal , and therefore the sides which subtend them . PROP . VII . THEOR . On the same right line ( AB ) and on the same ...
Página 79
... equiangular to the given B. triangle EDF . Prop . 32 . PROP . III . PROB . About a given circle ( ABC ) to circumscribe a triangle Fig . 4 . equiangular to a given triangle ( EDF ) . Produce any side DF of the given triangle both ways ...
... equiangular to the given B. triangle EDF . Prop . 32 . PROP . III . PROB . About a given circle ( ABC ) to circumscribe a triangle Fig . 4 . equiangular to a given triangle ( EDF ) . Produce any side DF of the given triangle both ways ...
Página 85
... equiangular pentagon Fig . 13 . in a given circle ( ABCDE ) . See N. Construct an isosceles triangle , in which each of the angles at the base shall be double of the angle at the vertex ( 1 ) ; and inscribe in the given circle a ...
... equiangular pentagon Fig . 13 . in a given circle ( ABCDE ) . See N. Construct an isosceles triangle , in which each of the angles at the base shall be double of the angle at the vertex ( 1 ) ; and inscribe in the given circle a ...
Página 86
... equiangular . Cor . 2. An equiangular figure , inscribed in a circle , has its alternate sides equal , as is evident from the equality of the arches which contain equal angles . Schol . Hence if the number of sides be odd , the figure ...
... equiangular . Cor . 2. An equiangular figure , inscribed in a circle , has its alternate sides equal , as is evident from the equality of the arches which contain equal angles . Schol . Hence if the number of sides be odd , the figure ...
Página 87
... equiangular . Cor . În the same manner any equilateral and equi- angular figure can be circumscribed about a circle ; by inscribing a similar figure , and drawing tangents through the vertices of its angles . PROP . XIII . PROB . To ...
... equiangular . Cor . În the same manner any equilateral and equi- angular figure can be circumscribed about a circle ; by inscribing a similar figure , and drawing tangents through the vertices of its angles . PROP . XIII . PROB . To ...
Términos y frases comunes
absurd AC and BD AC and CB AC is equal angle ABC angle ACD angle BAC angle equal base bisected centre circumference Constr constructed contained in CD demonstrated described double the rectangle double the square drawn equal angles equal to AC equal to double equi equi-multiples equi-submultiples equiangular Euclid evident external angle fore form one right four magnitudes proportional four right angles fourth given angle given circle given line given right line given triangle gles half a right Hypoth inscribed less line CD manner multiple oftener opposite parallel parallelogram perpendicular PROB produced Prop proposition radius rectangle under AC right angles right line AB Schol segment side AC sides AB similar squares of AC submultiple taken tangent THEOR third tiple triangle ABC vertex
Pasajes populares
Página 147 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Página 3 - Things which are equal to the same thing are equal to one another. 2. If equals be added to equals, the wholes are equal. 3. If equals be taken from equals, the remainders are equal. 4. If equals be added to unequals, the wholes are unequal. 5. If equals be taken from unequals, the remainders are unequal. 6. Things which are double of the same are equal to one another.
Página 22 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Página 16 - If two triangles have two sides of the one respectively equal to two sides of the other, and the contained angles supplemental, the two triangles are equal.
Página 148 - A plane angle is the inclination of two lines to one another in a plane, which meet together, but are not in the same direction.
Página 2 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 92 - F) a ratio compounded of the ratios which the first has to the second, the second to the third, the third to the fourth (A to D, D to C, and C to F) ; and so on to the last.
Página 93 - AXIOMS. 1. Equimultiples of the same, or of equal magnitudes, are equal to one another. 2. Those magnitudes, of which the same or equal magnitudes are equimultiples, are equal to one another. 3. A multiple of a greater magnitude is greater than the same multiple of a less. 4. That magnitude, of which a multiple is greater than the same multiple of another, is greater than that other magnitude.
Página 25 - DE : but equal triangles on the same base and on the same side of it, are between the same parallels ; (i.
Página 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.