## 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 |

### Inni boken

Side 24

The Errors, by which Theon, Or

Corrected and Some of Euclid's ... IF F

viz ...

The Errors, by which Theon, Or

**Others**,**Have**Long Ago Vitiated These Books,**are**Corrected and Some of Euclid's ... IF F

**two**triangles**have two angles**of**one****equal to two angles of the other**; each to each , and**one**side**equal**to**one**side ,viz ...

Side 31

XXXIV . THEOR . THE opposite sides and

**1**. and it was shewn to be**equal**to it . therefore straight lines & c . Q. E. D. PROP .XXXIV . THEOR . THE opposite sides and

**angles**of parallelograms**are equal**to**one another , and the**diameter bisects them , that is , divides them into**two**... Side 97

The Errors, by which Theon, Or

Corrected and Some of Euclid's Demonstrations

right

them KAM , KBM

EBD , FBD

The Errors, by which Theon, Or

**Others**,**Have**Long Ago Vitiated These Books,**are**Corrected and Some of Euclid's Demonstrations

**are**Restored. ...**equal**to fourright

**angles**, for it can be divided into**two**triangles ; Book IV : and that**two**ofthem KAM , KBM

**are**right**angles**, the ... the right**angle**BFD , the**two**trianglesEBD , FBD

**have two**E D**angles of the one equal to two angles of the other , and****the**side ... Side 192

Let

section ; DB is a straight line . ...

therefore the triangles AEG , BEH

Let

**two**planes AB , BC cut**one another**, and let the line DB be their commonsection ; DB is a straight line . ...

**angle**AEG is**equal**to the**angle**BEH ? ;therefore the triangles AEG , BEH

**have two angles**of**one equal to two angles of****the other**... Side 236

...

triangles H AB , MDE there

...

...

**angle**. for the same reafon , DEM is a right**angle**, and is therefore**equal**to the**angle**ABH . and the**angle**HAB is**equal**to the**angle**MDE . therefore in the**two**triangles H AB , MDE there

**are two angles**in**one equal to two angles**in the**other**...

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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 ... 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.