## The Elements of Euclid: The Errors by which Theon, Or Others, Have Long Vitiated These Books, are Corrected, and Some of Euclid's Demonstrations are Restored. Also the Book of Euclid's Data, in Like Manner Corrected. viz. the first six books, together with the eleventh and twelfth |

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Resultat 1-5 av 6

Side 80

The segment AHB shall contain an

Because from the point A , the exH tremity of the diameter AE , AD is с drawn at

right

...

The segment AHB shall contain an

**angle**equal to the**given**rectilineal**angle**C.Because from the point A , the exH tremity of the diameter AE , AD is с drawn at

right

**angles**to AE , there* Cor . 16. fore AD * touches the circle : and because AB...

Side 359

If a straight line be drawn to a given point in a straight line given in position , and

make a

straight line given in position , and C a given point in it , the straight line drawn to

C ...

If a straight line be drawn to a given point in a straight line given in position , and

make a

**given angle**with it ; that straight line is given in position . Let AB be astraight line given in position , and C a given point in it , the straight line drawn to

C ...

Side 367

Take a straight line DE

, D make * the

ABC ; therefore the other

Take a straight line DE

**given**in position and magniА tude , and at the points D , E, D make * the

**angle**EDF equal to the**angle**BAC , and the**angle**DEF equal toABC ; therefore the other

**angles**B E EFD , BCA are equal , and each of the ... Side 374

Each of the triangles EFG , EFO , bas the things mentioned to be given in the

proposition : for each of them has the

is bisected by the straight line FMN , the sides EF , FG , together bave to EG the

third ...

Each of the triangles EFG , EFO , bas the things mentioned to be given in the

proposition : for each of them has the

**given angle**EFG ; and because this angleis bisected by the straight line FMN , the sides EF , FG , together bave to EG the

third ...

Side 407

43 Dat . species , and the ratio of EB , thatis , of EA , to ED , is therefore

and the

therefore the triangle AED is

the ...

43 Dat . species , and the ratio of EB , thatis , of EA , to ED , is therefore

**given**;and the

**angle**EDA is**given**, because each of the**angles**BDE , BĎA , is**given**;therefore the triangle AED is

**given*** in species , and the**angle**AED**given**: alsothe ...

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The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ... Robert Simson Uten tilgangsbegrensning - 1775 |

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 Ago ... Robert Simson Uten tilgangsbegrensning - 1781 |

### Vanlige uttrykk og setninger

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 Euclid 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 proved pyramid radius reason rectangle rectilineal figure remaining right angles segment shewn sides similar sine solid sphere square square of AC taken THEOR third triangle ABC wherefore whole

### Populære avsnitt

Side 141 - 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 40 - If there be two straight lines, one of which is divided into any number of parts, the rectangle contained by the two straight lines is equal to the rectangles contained by the undivided line, and the several parts of the divided line. Let...

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 also the two interior angles upon the same side together equal to two right angles.

Side 46 - If a straight line be divided into any two parts, four times the rectangle contained by the whole line and one of the parts, together with the square of the other part, is equal to the square of the straight line which is made up of the whole and that part.

Side 28 - Cor. angles; that is * together with four right angles. There1s, 1. fore 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 21 - If two triangles have two sides of the one equal to two sides of the other, each to each, but the angle contained by the two sides of one of them greater than the angle contained by the two sides equal to them, of the other ; the base of that which has the greater angle shall be greater than the base of the other.

Side 12 - IF two triangles have two sides of the one equal to two sides of the other, each to each, and have likewise their bases equal; the angle. which is contained by the two sides...

Side 169 - Wherefore, in equal circles &c. QED PROPOSITION B. THEOREM If the vertical angle of a triangle be bisected by a straight line which likewise cuts the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the segments of the base, together with the square on the straight line which bisects the angle.

Side 5 - LET it be granted that a straight line may be drawn from any one point to any other point. 2. That a terminated straight line may be produced to any length in a straight line. 3. And that a circle may be described from any centre, at any distance from that centre.

Side 97 - 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.