## 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 |

### Inni boken

Resultat 1-5 av 9

Side 75

If two circles touch each other internally , the straight line which

being produced shall pass through the ... being produced , passes through the

point A. H For , if not , let it fall otherwise , if possible , as FGDH , and

...

If two circles touch each other internally , the straight line which

**joins**their centresbeing produced shall pass through the ... being produced , passes through the

point A. H For , if not , let it fall otherwise , if possible , as FGDH , and

**join**AF , AG...

Side 83

First , let E the centre of the circle be within the angle BAC , and

produce it to F ; because EX is equal to E EB , the angle EAB is equal ( 5. 1. ) to

the angle EBA ; therefore the angles EAB , EĎA are double of the angle EAB , but

B ...

First , let E the centre of the circle be within the angle BAC , and

**join**AE , andproduce it to F ; because EX is equal to E EB , the angle EAB is equal ( 5. 1. ) to

the angle EBA ; therefore the angles EAB , EĎA are double of the angle EAB , but

B ...

Side 90

K , L , the centres of the circles , and

circumference BGC is equal to А D K L B с Е F G H the circumference EHF , the

angle BKC is equal ( 27. 3. ) to the angle ELF : and because the circles ABC ,

DEF are ...

K , L , the centres of the circles , and

**join**BK , KC , EL , LF : and because thecircumference BGC is equal to А D K L B с Е F G H the circumference EHF , the

angle BKC is equal ( 27. 3. ) to the angle ELF : and because the circles ABC ,

DEF are ...

Side 297

Let ABCD be a quadrilateral figure , of which the opposite sides AB , CD are

equal to one another : A D as also AD and BC :

are equal to the two CB , BD , and the base AB is equal to the base CD ; therefore

, by ...

Let ABCD be a quadrilateral figure , of which the opposite sides AB , CD are

equal to one another : A D as also AD and BC :

**join**BD ; the two sides AD , DBare equal to the two CB , BD , and the base AB is equal to the base CD ; therefore

, by ...

Side 452

B E D to E , and

and the angle AEC ... containing a given angle . Take D the centre of the circle ,

lines ...

B E D to E , and

**join**EC : the angle ACE being a right ( 31. 3. ) angle , is given ;and the angle AEC ... containing a given angle . Take D the centre of the circle ,

**join**AD B and produce it to E , and**join**EC : and because each of the straightlines ...

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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.