The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh and Twelfth : 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 : to this Edition are Also Annexed, Elements of Plane and Spherical TrigonometryRobert Desilver, 1821 - 516 sider |
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Side 14
... greater . It is required to cut off from AB , the greater , a part equal to C , the less . A F B From the point A draw ( 2. 1. ) the straight line AD equal to C ; and from the centre A , and at the distance AD , describe ( 3. Post ...
... greater . It is required to cut off from AB , the greater , a part equal to C , the less . A F B From the point A draw ( 2. 1. ) the straight line AD equal to C ; and from the centre A , and at the distance AD , describe ( 3. Post ...
Side 17
... greater , and from it cut ( 3. 1. ) off DP equal to AC , the less , and join DC ; therefore , because in the ... greater also than BCD ; much more then is the angle BDC greater than A C D Ꭰ B the angle BCD . Again , because CB is equal ...
... greater , and from it cut ( 3. 1. ) off DP equal to AC , the less , and join DC ; therefore , because in the ... greater also than BCD ; much more then is the angle BDC greater than A C D Ꭰ B the angle BCD . Again , because CB is equal ...
Side 18
... greater than BCD ; much more than is the angle BDC greater than the angle BCD . Again , because CB is equal to DB , the angle BDC is equal ( 5. 1. ) to the angle BDC ; but BCD has been proved to be greater than the same BCD ; which is ...
... greater than BCD ; much more than is the angle BDC greater than the angle BCD . Again , because CB is equal to DB , the angle BDC is equal ( 5. 1. ) to the angle BDC ; but BCD has been proved to be greater than the same BCD ; which is ...
Side 24
... greater than the angle ECF ; therefore the angle ACD is greater than BAE : in the same manner , if the side BC be bisected , it may be demonstrat- ed that the angle BCG , that is , ( 15. 1. ) the angle ACD , is great- er than the angle ...
... greater than the angle ECF ; therefore the angle ACD is greater than BAE : in the same manner , if the side BC be bisected , it may be demonstrat- ed that the angle BCG , that is , ( 15. 1. ) the angle ACD , is great- er than the angle ...
Side 25
... greater than the angles ABC , ACB ; but ACD , ACB are together equal ( 13. 1. ) to two right angles ; therefore the ... greater side of every triangle is opposite to the greater angle . Let ABC be a triangle , of which the side AC is ...
... greater than the angles ABC , ACB ; but ACD , ACB are together equal ( 13. 1. ) to two right angles ; therefore the ... greater side of every triangle is opposite to the greater angle . Let ABC be a triangle , of which the side AC is ...
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The Elements of Euclid: Viz, the First Six Books, Together with the Eleventh ... Robert Simson,Euclid Euclid Ingen forhåndsvisning tilgjengelig - 2018 |
Vanlige uttrykk og setninger
AC is equal altitude angle ABC angle BAC base BC BC is given bisected centre circle ABCD circumference cone cylinder demonstrated described diameter draw drawn equal angles equiangular equimultiples Euclid ex æquali excess fore given angle given in magnitude given in position given in species given magnitude given ratio given straight line gnomon greater join less Let ABC meet multiple parallel parallelogram perpendicular point F polygon prism proportionals proposition pyramid Q. E. D. PROP radius ratio of AE rectangle CB rectangle contained rectilineal figure remaining angle right angles segment side BC similar solid angle solid parallelopipeds sphere spherical angle square of AC straight line AB straight line BC tangent THEOR third triangle ABC vertex wherefore
Populære avsnitt
Side 11 - Let it be granted that a straight line may be drawn from any one point to any other point.
Side 155 - IF a straight line be drawn parallel to one of the sides of a triangle, it shall cut the other sides, or those produced, proportionally; and if the sides, or the sides produced, be cut proportionally, the straight line which joins the points of section shall be parallel to the remaining side of the triangle...
Side 329 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.
Side 20 - To draw a straight line at right angles to a given straight line, from a given point in the same.
Side 9 - 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.
Side 55 - If 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 of the line between the points of section, is equal to the square of half the line.
Side 318 - Again ; the mathematical postulate, that " things which are equal to the same are equal to one another," is similar to the form of the syllogism in logic, which unites things agreeing in the middle term.
Side 21 - The angles which one straight line makes with another upon one tide of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it the angles CBA, ABD ; these are either two right angles, or are together equal to two right angles. For, if the angle CBA be equal to ABD, each of them is a right angle (Def.
Side 27 - To construct a triangle of which the sides shall be equal to three given straight lines ; but any two whatever of these lines must be greater than the third (20.