## The Elements of Euclid; viz. the first six books, together with the eleventh and twelfth. Also the book of Euclid's Data. By R. Simson. To which is added, A treatise on the construction of the trigonometrical canon [by J. Christison] and A concise account of logarithms [by A. Robertson]. |

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Side 458

In the 23d Prop . in the

autous de , ” are wrong translated by Claud . Hardy , in his edition of Euclid ' s

Data , printed at Paris , anno 1625 , which was the first edition of the

In the 23d Prop . in the

**Greek**text , which here is the 12th , the words , “ un TOUSautous de , ” are wrong translated by Claud . Hardy , in his edition of Euclid ' s

Data , printed at Paris , anno 1625 , which was the first edition of the

**Greek**text ... Side 460

20 . in the

which it should have been immediately placed , as being of the same kind ; it is

now put in its proper place ; but Prop . 21 . in the

20 . in the

**Greek**text , was separated from Prop . 14 . 15 . 16 . in ' that text , afterwhich it should have been immediately placed , as being of the same kind ; it is

now put in its proper place ; but Prop . 21 . in the

**Greek**is left out , as being the ... Side 461

This is Prop : 44 . in the

another , wherein the several cases of it are shown , which , though necessary , is

not done in the

This is Prop : 44 . in the

**Greek**text ' ; ' but the demonstration of it is changed intoanother , wherein the several cases of it are shown , which , though necessary , is

not done in the

**Greek**. PROP . XLVIII . There are two cases in this proposition ... Side 462

73 , in the

inclosed betwixt two stars are superfluous , and ought to be cancelled ; but he

has not observed , that what follows them is absurd , being to prove that the ratio

...

73 , in the

**Greek**is grossly vitiated . Dr . Gregory says , that the sentences he hasinclosed betwixt two stars are superfluous , and ought to be cancelled ; but he

has not observed , that what follows them is absurd , being to prove that the ratio

...

Side 463

79 . in the

to Prop . 80 . in that text : And Prop . 79 . is made Cor . 1 . to Prop . 77 . in this

edition . Cl . Hardy , in his edition of the Data , takes notice , that in Prop . 80 . of

the ...

79 . in the

**Greek**text , which is not a datum , but a theorem premised as a lemmato Prop . 80 . in that text : And Prop . 79 . is made Cor . 1 . to Prop . 77 . in this

edition . Cl . Hardy , in his edition of the Data , takes notice , that in Prop . 80 . of

the ...

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The Elements of Euclid; viz. the first six books, together with the eleventh ... Euclides Uten tilgangsbegrensning - 1834 |

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added altitude angle ABC angle BAC base Book centre circle circle ABCD circumference common cone contained cylinder definition demonstrated described diameter difference divided double draw drawn equal equal angles equiangular equimultiples excess figure fore four fourth given angle given in position given in species given magnitude given ratio given straight line greater Greek half join less likewise logarithm magnitude manner meet multiple opposite parallel parallelogram pass perpendicular plane prism produced PROP proportionals proposition pyramid radius reason rectangle rectangle contained remaining right angles segment shown sides similar sine solid solid angle sphere square square of AC Take taken THEOR third triangle ABC wherefore whole

### Populære avsnitt

Side 43 - IF a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the rectangle contained by the parts.

Side 20 - Any two sides of a triangle are together greater than the third side.

Side 30 - Therefore all the angles of the figure, together with four right angles, are equal to twice as many right angles as the figure has sides.

Side 20 - If, from the ends of the side of a triangle, there be drawn two straight lines to a point within the triangle, these shall be less than, the other two sides of the triangle, but shall contain a greater angle. Let...

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 8 - DL is equal to DG, and DA, DB, parts of them, are equal ; therefore the remainder AL is equal to the remainder (3. Ax.) BG : But it has been shewn that BC is equal to BG ; wherefore AL and BC are each of them equal to BG ; and things that are equal to the same are equal to one another ; therefore the straight line AL is equal to BC.

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 52 - To divide a given straight line into two parts, so that the rectangle contained by the whole, and one of the parts, may be equal to the square of the other part.

Side 3 - 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 165 - SIMILAR triangles are to one another in the duplicate ratio of their homologous sides.