## The Elements of Euclid, Viz: 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. the first six books, together with the eleventh and twelfth |

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Side 19

THEO R. ON the same base , and on the same side of it , See Ni there cannot be

two triangles that have their

base equal to one another , and likewise those which are terminated in the other

...

THEO R. ON the same base , and on the same side of it , See Ni there cannot be

two triangles that have their

**fides**which are terminated in one extremity of thebase equal to one another , and likewise those which are terminated in the other

...

Side 21

BC is equal to EF ; therefore BC coinciding with EF , BA and Book I. AC shall

coincide with ED and DF ; for , if the base BC coincides with the base EF , but the

Gides BA , CA do not coincide with the

situation ...

BC is equal to EF ; therefore BC coinciding with EF , BA and Book I. AC shall

coincide with ED and DF ; for , if the base BC coincides with the base EF , but the

Gides BA , CA do not coincide with the

**fides**ED , FD , but have a differentsituation ...

Side 22

Book I. C Because AC is equal to CB , and CD common to the two triangles ACD ,

BCD ; the two

ACD is equal to the angle BCD ; therefore the base AD is equal to the base ...

Book I. C Because AC is equal to CB , and CD common to the two triangles ACD ,

BCD ; the two

**fides**AC , CD are equal to BC , CD , each to each ; and the angleACD is equal to the angle BCD ; therefore the base AD is equal to the base ...

Side 24

F , at a point in a straight line , two other straight lines , upon the opposite

it , make the adjacent angles together equal to two right angles , these two

straight lines shall be in one and the fame straight line . At the point B in the

straight A.

F , at a point in a straight line , two other straight lines , upon the opposite

**fides**ofit , make the adjacent angles together equal to two right angles , these two

straight lines shall be in one and the fame straight line . At the point B in the

straight A.

Side 29

To each of these add EC therefore the sides BA , AC are greater than BE , EC :

Again , E because the two

add DB so each of these ; therefore the

To each of these add EC therefore the sides BA , AC are greater than BE , EC :

Again , E because the two

**fides**CE , ED of the triangle CED are greater than CD ,add DB so each of these ; therefore the

**fides**CE , EB are greater than CD , DB ...### Hva folk mener - Skriv en omtale

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### Andre utgaver - Vis alle

The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ... Robert Simson Uten tilgangsbegrensning - 1762 |

The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ... Robert Simson Uten tilgangsbegrensning - 1827 |

The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ... Robert Simson Uten tilgangsbegrensning - 1781 |

### Vanlige uttrykk og setninger

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### Populære avsnitt

Side 32 - 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. either the sides adjacent to the equal...

Side 165 - D ; wherefore the remaining angle at C is equal to the remaining angle at F ; Therefore the triangle ABC is equiangular to the triangle DEF.

Side 170 - 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 10 - When several angles are at one point B, any ' one of them is expressed by three letters, of which ' the letter that is at the vertex of the angle, that is, at ' the point in which the straight lines that contain the ' angle meet one another, is put between the other two ' letters, and one of these two is...

Side 55 - 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 32 - ... then shall the other sides be equal, each to each; and also the third angle of the one to the third angle of the other. Let ABC, DEF be two triangles which have the angles ABC, BCA equal to the angles DEF, EFD, viz.

Side 45 - To describe a parallelogram that shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.

Side 211 - AB shall be at right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK ; take any point F in CE, from which draw FG in the plane DE at right D angles to CE ; and because AB is , perpendicular to the plane CK, therefore it is also perpendicular to every straight line in that plane meeting it (3.

Side 38 - F, which is the common vertex of the triangles ; that is, together with four right angles. 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 304 - Thus, if B be the extremity of the line AB, or the common extremity of the two lines AB, KB, this extremity is called a point, and has no length : For if it have any, this length must either be part of the length of the line AB, or of the line KB.