The Elements of Euclid: viz. the first six books, together with the eleventh and twelfth; and also the book of Euclid's DataBell & Bradfute, 1835 - 513 sider |
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Side 11
... straight lines that contain the angle meet one another is put between the other two letters , and one of these two is some- where upon one of those straight lines , and the other upon the other line ... AB , CB is named the angle ABC , or CBA ...
... straight lines that contain the angle meet one another is put between the other two letters , and one of these two is some- where upon one of those straight lines , and the other upon the other line ... AB , CB is named the angle ABC , or CBA ...
Side 11
... straight line . Let AB be the given straight line ; it is required to describe an equilateral triangle upon it . From the centre A , at the dis- a 3. Postu- tance AB , describe a the circle BCD , and from the centre B , at the distance ...
... straight line . Let AB be the given straight line ; it is required to describe an equilateral triangle upon it . From the centre A , at the dis- a 3. Postu- tance AB , describe a the circle BCD , and from the centre B , at the distance ...
Side 11
... AB to DE , and AC to DF ; and the angle BAC equal to the angle EDF ; the base BC shall be equal to the base EF ; and the triangle ABC to the tri- angle DEF ; and the other ... AB is equal to AC , and let the straight line AB THE ELEMENTS.
... AB to DE , and AC to DF ; and the angle BAC equal to the angle EDF ; the base BC shall be equal to the base EF ; and the triangle ABC to the tri- angle DEF ; and the other ... AB is equal to AC , and let the straight line AB THE ELEMENTS.
Side 13
... straight line AB is divided into two equal parts in the point D. Which was to be done . C A PROP . XI . PROB . C Book I. c 4. 1 . D B To draw a straight line at right angles to a given straight line , from a given point in the same . Let AB ...
... straight line AB is divided into two equal parts in the point D. Which was to be done . C A PROP . XI . PROB . C Book I. c 4. 1 . D B To draw a straight line at right angles to a given straight line , from a given point in the same . Let AB ...
Side 14
... line , the angle CBE is equal a to the angle EBA ; in the a 10. Def . same manner , because ABD is a straight line , the angle DBE is equal to the angle EBA ; wherefore the angle DBE is ... straight line AB make with CD , upon THE ELEMENTS.
... line , the angle CBE is equal a to the angle EBA ; in the a 10. Def . same manner , because ABD is a straight line , the angle DBE is equal to the angle EBA ; wherefore the angle DBE is ... straight line AB make with CD , upon THE ELEMENTS.
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The Elements Of Euclid: Viz. The First Six Books, Together With The Eleventh ... Robert Simson,Euclid,John Davidson Ingen forhåndsvisning - 2019 |
Almindelige termer og sætninger
ABCD altitude angle ABC angle BAC arch base BC BC is equal BC is given bisected Book XI centre circle ABC circumference cone cosine 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 gles gnomon greater half the perimeter hypotenuse join less Let ABC multiple parallel parallelogram perpendicular point F polygon prism proportionals proposition Q. E. D. PROP radius rectangle CB rectangle contained rectilineal figure remaining angle right angles segment side BC similar sine solid angle solid parallelepiped spherical angle square of AC straight line AB straight line BC tangent THEOR tiple triangle ABC vertex wherefore
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Side 95 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Side 153 - 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 306 - 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 11 - 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 11 - Upon the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of the base equal to one another, and likewise those which are terminated in the other extremity.
Side 317 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.
Side 54 - In every triangle, the square on the side subtending either of the acute angles, is less than the squares on the sides containing that angle, by twice the rectangle contained by either of these sides, and the straight line intercepted between the...
Side 26 - IF a straight line fall upon two parallel straight lines it makes the alternate angles equal to one another ; and the exterior angle equal to the interior and opposite, upon the same side ; and likewise the two interior angles upon the same side together equal to two right angles.
Side 11 - If a straight line meet two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...
Side 93 - A circle is said to be described about a rectilineal figure, when the circumference of the circle passes through all the angular points of the figure about which it is described. VII. A straight line is said to be placed in a circle, when the extremities of it are in the circumference of the circle.