The Elements of Euclid; viz. the first six books,together with the eleventh and twelfth, with an appendixThomas Tegg, 1841 - 351 sider |
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Side 10
... base BC shall coincide with the base EF ; because the point B coinciding with E , and C with F , if the base BC did not coincide with the base EF , two straight 10 Ax . lines would enclose a space , which is impossible . * Therefore the ...
... base BC shall coincide with the base EF ; because the point B coinciding with E , and C with F , if the base BC did not coincide with the base EF , two straight 10 Ax . lines would enclose a space , which is impossible . * Therefore the ...
Side 11
... base shall be equal . Let ABC be an isosceles triangle , of which the side AB is equal to AC , and let the straight ... base FC is equal to the base GB , and the triangle AFC to the triangle AGB ; and the remain- ing angles of the one ...
... base shall be equal . Let ABC be an isosceles triangle , of which the side AB is equal to AC , and let the straight ... base FC is equal to the base GB , and the triangle AFC to the triangle AGB ; and the remain- ing angles of the one ...
Side 12
... base . Therefore the angles at the base , & c . Q. E. D. COROLLARY . Hence every equilateral triangle is also equiangular . PROP . VI . THEOR . If two angles of a triangle be equal to one another , the sides also which subtend , or are ...
... base . Therefore the angles at the base , & c . Q. E. D. COROLLARY . Hence every equilateral triangle is also equiangular . PROP . VI . THEOR . If two angles of a triangle be equal to one another , the sides also which subtend , or are ...
Side 13
... base DC is equal to the base AB , and the triangle DBC is equal to the triangle ACB , the less to the greater , which is absurd . Therefore AB is not unequal to AC , that is , it is equal to it . Wherefore , if two angles , & c ...
... base DC is equal to the base AB , and the triangle DBC is equal to the triangle ACB , the less to the greater , which is absurd . Therefore AB is not unequal to AC , that is , it is equal to it . Wherefore , if two angles , & c ...
Side 14
... base CD are equal to one another ; but the * angle ECD is greater than the angle BCD ; therefore the angle FDC is ... base , and on the same side of it , there cannot be two triangles that have their sides which are terminated in one ...
... base CD are equal to one another ; but the * angle ECD is greater than the angle BCD ; therefore the angle FDC is ... base , and on the same side of it , there cannot be two triangles that have their sides which are terminated in one ...
Andre utgaver - Vis alle
The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ... Euclid Uten tilgangsbegrensning - 1838 |
The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ... Euclid Ingen forhåndsvisning tilgjengelig - 2015 |
The Elements of Euclid: Viz. the First Six Books, Together With the Eleventh ... Euclid Ingen forhåndsvisning tilgjengelig - 2023 |
Vanlige uttrykk og setninger
AB is equal AC is equal altitude angle ABC angle ACB angle BAC base BC bisect centre circle ABCD circle EFGH circumference common section cone cylinder demonstrated described diameter draw equal to F equiangular equilateral equimultiples exterior angle fore given rectilineal given straight line gnomon inscribed join less Let ABC meet multiple opposite angle parallel parallelogram parallelopiped perpendicular polygon prisms PROB proved pyramid ABCG pyramid DEFH Q. E. D. PROP rectangle contained rectilineal figure remaining angle right angles segment solid angle solid CD sphere square of AC straight line AC THEOR third three plane angles three straight lines tiples touches the circle triangle ABC triangle DEF triplicate ratio twice the rectangle wherefore whole
Populære avsnitt
Side 173 - 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 56 - Iff a straight line be divided into any two parts, four times the rectangle contained by the whole line, and one of the parts, together with the square of the other part, is equal to the square of the straight line which is made up of the whole and that part.
Side 53 - If a straight line be divided into two equal parts, and also into two unequal parts, the rectangle contained by the unequal parts, together with the square on the line between the points of section, is equal to the square on half the line.
Side 58 - IF a straight line be divided into two equal, and also into two unequal parts; the squares of the two unequal parts are together double of the square of half the line, and of the square of the line between the points of section.
Side 94 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Side 23 - Any two sides of a triangle are together greater than the third side.
Side 40 - EQUAL triangles upon the same base, and upon the same side of it, are between the same parallels.
Side 103 - If from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, shall be equal to the square on the line which touches it.
Side 50 - PROP. I. THEOR. If there oe two straight lines, one of which is divided into any number of parts; the rectangle contained by the two straight lines, is equal to the rectangles contained by the undivided line, and the several parts of the divided line.
Side 28 - If two triangles have two angles of the one equal to two angles of the other, each to each, and also one side of the one equal to the corresponding side of the other, the triangles are congruent.