## 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 |

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Resultat 1-5 av 8

Side 31

to the base DF , and the

sides which are opposite to A D equal angles in each triangle be equal to one

another , viz . AB to DE ; likewise in this case , the other sides shall be equal , AC

to ...

to the base DF , and the

**third**angle BAC to the**third**angle EDF . Next , let thesides which are opposite to A D equal angles in each triangle be equal to one

another , viz . AB to DE ; likewise in this case , the other sides shall be equal , AC

to ...

Side 118

first be greater than that of the second , the multiple of the

than that of the fourth . VI . Magnitudes which have the same ratio are called

proportionals . N. B. “ When four magnitudes are proportionals , it is usually

expressed ...

first be greater than that of the second , the multiple of the

**third**is also greaterthan that of the fourth . VI . Magnitudes which have the same ratio are called

proportionals . N. B. “ When four magnitudes are proportionals , it is usually

expressed ...

Side 127

If the first of four magnitudes have to the second the same ratio which the

has to the fourth : then , if the first be greater than the second , the

greater than the fourth ; and if equal , equal ; if less , less . * Take any

equimultiples of ...

If the first of four magnitudes have to the second the same ratio which the

**third**has to the fourth : then , if the first be greater than the second , the

**third**is alsogreater than the fourth ; and if equal , equal ; if less , less . * Take any

equimultiples of ...

Side 127

If the first of four magnitudes have to the second the same ratio which the

has to the fourth : then , if the first be greater than the second , the

greater than the fourth ; and if equal , equal ; if less , less . * Take any

equimultiples of ...

If the first of four magnitudes have to the second the same ratio which the

**third**has to the fourth : then , if the first be greater than the second , the

**third**is alsogreater than the fourth ; and if equal , equal ; if less , less . * Take any

equimultiples of ...

Side 210

If two planes cutting one another be each of them perpendicular to a

their common section shall be perpendicular to the same plane . Let the two

planes AB , BC be each of them perpendicular to a

...

If two planes cutting one another be each of them perpendicular to a

**third**plane ;their common section shall be perpendicular to the same plane . Let the two

planes AB , BC be each of them perpendicular to a

**third**plane , and let BD be the...

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The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ... Euclid,Robert Simson Uten tilgangsbegrensning - 1825 |

The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ... Euclid,Robert Simson Uten tilgangsbegrensning - 1838 |

### Vanlige uttrykk og setninger

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

### Populære avsnitt

Side 9 - Let it be granted that a straight line may be drawn from any one point to any other point.

Side 81 - The angles in the same segment of a circle are equal to one another.

Side 315 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.

Side 33 - 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.

Side 49 - If a straight line be divided into any two parts, the rectangle contained by the whole and one of the parts, is equal to the rectangle contained by the two parts, together with the square of the aforesaid part.

Side 96 - 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 of the line which touches it.

Side 155 - 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 22 - ANY two angles of a triangle are together less than two right angles.

Side 25 - Let A, B, C be the three given straight lines, of which any two whatever are greater than the third, viz.

Side 24 - Any two sides of a triangle are together greater than the third side.