## The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago Vitiated These Books, are Corrected and Some of Euclid's Demonstrations are Restored. Also, to this Second Edition is Added 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 12

Side 19

19 these add the angle ACB , therefore the angles ACD , ACB are great- Book I.

er than the

angles ; therefore the

19 these add the angle ACB , therefore the angles ACD , ACB are great- Book I.

er than the

**angles ABC**, ACB . but ACD , ACB are together equalb m to two rightangles ; therefore the

**angles ABC**, BCA are less than b . 13. 1 . two right angles ... Side 41

then because each of the angles BAC , BAG is a right angle " , the two straight

lines b . ... line . and because the angle DBC is equal to the angle FBA , each of

them being a right angle , add to each the

DBA ...

then because each of the angles BAC , BAG is a right angle " , the two straight

lines b . ... line . and because the angle DBC is equal to the angle FBA , each of

them being a right angle , add to each the

**angle ABC**, E and the whole angleDBA ...

Side 96

Let ABC be the given circle , and DEF the given triangle ; it is required to inscribe

in the circle ABC a triangle ... is equal to the

of the circle . but HAC is equal to the angle DEF , therefore also the

...

Let ABC be the given circle , and DEF the given triangle ; it is required to inscribe

in the circle ABC a triangle ... is equal to the

**angle ABC**in the alternate segmentof the circle . but HAC is equal to the angle DEF , therefore also the

**angle ABC**is...

Side 154

IF the sides of two triangles , about each of their angles , be proportionals , the

triangles shall be equiangular , and ... I. At the points E , F in the straight line EF

make the angle FEG equal to the

IF the sides of two triangles , about each of their angles , be proportionals , the

triangles shall be equiangular , and ... I. At the points E , F in the straight line EF

make the angle FEG equal to the

**angle ABC**, and the angle EFG equal to BCA ... Side 167

rectilineal figures ABHG , CDEF are equiangular , and have their Book VI . sides

about the equal

the

rectilineal figures ABHG , CDEF are equiangular , and have their Book VI . sides

about the equal

**angles**proportionals ... Let**ABC**, DEF be similar triangles havingthe

**angle**B equal to the**angle**E , and let AB be to BC , as DE to EF , so that the ...### Hva folk mener - Skriv en omtale

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### Andre utgaver - Vis alle

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 ... 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

added alſo altitude angle ABC angle BAC baſe BC is given becauſe Book Book XI caſe circle circle ABCD circumference common cone cylinder Definition demonſtrated deſcribed diameter divided double draw drawn equal equal angles equiangular equimultiples exceſs fame fides firſt folid 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 muſt oppoſite parallel parallelogram perpendicular plane priſm produced PROP proportionals Propoſition pyramid reaſon rectangle remaining right angles ſame ſecond ſegment ſhall ſhewn ſides ſimilar ſolid ſquare ſquare of AC taken THEOR theſe third thro triangle ABC wherefore whole

### Populære avsnitt

Side 5 - Let it be granted that a straight line may be drawn from any one point to any other point.

Side 163 - 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 48 - If a straight line be divided into any two parts, the squares of the whole line, and of one of the parts, are equal to twice the rectangle contained by the whole and that part, together with the square of the other part. Let the straight line AB be divided into any two parts in the point C; the squares of AB, BC are equal to twice the rectangle AB, BC, together with the square of AC.

Side 73 - The straight line drawn at right angles to the diameter of a circle, from the extremity of it, falls without the circle; and no straight line can be drawn from the extremity between that straight line and the circumference, so as not to cut the circle...

Side 105 - 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 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 167 - Similar triangles are to one another in the duplicate ratio of their homologous sides.

Side 54 - AB be the given straight line ; it is required to divide it into two parts, so that the rectangle contained by the whole, and one of the parts, shall be equal to the square of the other part.

Side 47 - 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 37 - To describe a parallelogram that shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.