## 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, the Book of Euclid's Data, in Like Manner Corrected. viz. the first six books, together with the eleventh and twelfth |

### Inni boken

Resultat 1-5 av 9

Side 47

If a straight line be bisected , and produced to any point , the square of the whole

line thus produced and the square of the part of it produced , are together double

of the square of

If a straight line be bisected , and produced to any point , the square of the whole

line thus produced and the square of the part of it produced , are together double

of the square of

**half**the line bisected , and of the square of the line made up of ... Side 86

... BCD , CDA are severally bisected by the straight lines BD , AC ; therefore ,

because the B C angle DAB is equal to the angle ABC , and that the angle EAB is

the

EBA ...

... BCD , CDA are severally bisected by the straight lines BD , AC ; therefore ,

because the B C angle DAB is equal to the angle ABC , and that the angle EAB is

the

**half**of DAB , and EBA the**half**of ABC ; the angle EAB is equal to the angleEBA ...

Side 200

LEMMA I. Which is the first proposition of the tenth book , and is necessary to

some of the propositions of this book . ar 10 21 { If from the greater of two unequal

magnitudes , there be taken more than its

than ...

LEMMA I. Which is the first proposition of the tenth book , and is necessary to

some of the propositions of this book . ar 10 21 { If from the greater of two unequal

magnitudes , there be taken more than its

**half**, and from the remainder morethan ...

Side 217

... SE : therefore each of the triangles EOF , FPG , GRH , HSE is greater than

of the segment of the circle in which it is : upon L N D H V Q S R A С G E K M м

T P Y B F X I Z each of these triangles erect a pyramid having the same vertex

with ...

... SE : therefore each of the triangles EOF , FPG , GRH , HSE is greater than

**half**of the segment of the circle in which it is : upon L N D H V Q S R A С G E K M м

T P Y B F X I Z each of these triangles erect a pyramid having the same vertex

with ...

Side 225

the circle EFGH : then , if the circumference BAD be bisected , and the

again bisected , and so on , there must at length remain a circumference less (

Lemma . ) than AD : let this be LD ; and from the point L draw LM perA 29 BOOK ...

the circle EFGH : then , if the circumference BAD be bisected , and the

**half**of it beagain bisected , and so on , there must at length remain a circumference less (

Lemma . ) than AD : let this be LD ; and from the point L draw LM perA 29 BOOK ...

### Hva folk mener - Skriv en omtale

Vi har ikke funnet noen omtaler på noen av de vanlige stedene.

### Andre utgaver - Vis alle

The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ... Euclid,Robert Simson Uten tilgangsbegrensning - 1825 |

The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ... Euclid Uten tilgangsbegrensning - 1892 |

### Vanlige uttrykk og setninger

added altitude angle ABC angle BAC base centre circle circle ABCD circumference common cone contained 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 gles greater Greek half join less likewise 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 45 - Ir 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 41 - 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 54 - Ir any two points be taken in the circumference of a circle, the straight line which joins them shall fall within the circle. Let ABC be a circle, and A, B any two points in the circumference ; the straight line drawn from A to B shall fall within the circle.

Side 18 - ABD, the less to the greater, which is impossible ; therefore BE is not in the same straight line with BC.

Side 10 - From a given point to draw a straight line equal to a given straight line. Let A be the given point, and BC the given straight line: it is required to draw from the point A a straight line equal to BC.

Side 8 - Let it be granted that a straight line may be drawn from any one point to any other point.

Side 256 - Again ; the mathematical postulate, that " things which are equal to the same are equal to one another," is similar to the form of the syllogism in logic, which unites things agreeing in the middle term.

Side 129 - 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 23 - At a given point in a given straight line, to make a rectilineal angle equal to a given rectilineal angle. Let AB be the given straight line, and A...

Side 20 - ANY two angles of a triangle are together less than two right angles.