## The Elements of Euclid; viz. the first six books, together with the eleventh and twelfth. Also the book of Euclid's Data. By R. Simson. To which is added, A treatise on the construction of the trigonometrical canon [by J. Christison] and A concise account of logarithms [by A. Robertson]. |

### Inni boken

Resultat 1-5 av 5

Side 35

1 . triangle ABC is equalb to the triangle EBC , becaụse it is upon the same base

BC , and between the same

same manner , it can be demonstrated , that no other line but AD is

1 . triangle ABC is equalb to the triangle EBC , becaụse it is upon the same base

BC , and between the same

**parallels**... Therefore AE is not**parallel**to BC , In thesame manner , it can be demonstrated , that no other line but AD is

**parallel**to ... Side 198

Book XI . join AD , CF , BE , AC , DF : Because BA is equal and

therefore AD is a both equal and

CF is equal and

...

Book XI . join AD , CF , BE , AC , DF : Because BA is equal and

**parallel**to ED ,therefore AD is a both equal and

**parallel**to • 33 . ) . BE . For the same reason ,CF is equal and

**parallel**to BE . Therefore AD and CF are each of them equal and...

Side 201

If two straight lines meeting one another , be pa - See N . rallel to two straight

lines which meet one another , but are not in the same plane with the first two ;

the plane which passes through these is

...

If two straight lines meeting one another , be pa - See N . rallel to two straight

lines which meet one another , but are not in the same plane with the first two ;

the plane which passes through these is

**parallel**to the plane passing through the...

Side 202

See N . IF two

with it are

and let their common sections with it be EF , GH : EF is

not ...

See N . IF two

**parallel**planes be cut by another plane , their common sectionswith it are

**parallels**. Let the**parallel**planes AB , CD be cut by the plane EFHG ,and let their common sections with it be EF , GH : EF is

**parallel**to GH . For , if it isnot ...

Side 217

Şee N . IF a solid be contained by six planes , two and two , of which are

the opposite planes are similar and equal parallelograms . Let the solid CDGH

be contained by the

Şee N . IF a solid be contained by six planes , two and two , of which are

**parallel**;the opposite planes are similar and equal parallelograms . Let the solid CDGH

be contained by the

**parallel**planes AC , GF ; BG , CE ; FB , AE : Its opposite ...### Hva folk mener - Skriv en omtale

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The Elements of Euclid; viz. the first six books, together with the eleventh ... Euclides Uten tilgangsbegrensning - 1834 |

### 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 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 pyramid radius reason rectangle rectangle contained remaining right angles segment shown sides similar sine solid solid angle sphere square square of AC Take taken THEOR third triangle ABC wherefore whole

### Populære avsnitt

Side 43 - IF a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the rectangle contained by the parts.

Side 20 - Any two sides of a triangle are together greater than the third side.

Side 30 - 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 20 - If, from the ends of the side of a triangle, there be drawn two straight lines to a point within the triangle, these shall be less than, the other two sides of the triangle, but shall contain a greater angle. Let...

Side 306 - 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 8 - DL is equal to DG, and DA, DB, parts of them, are equal ; therefore the remainder AL is equal to the remainder (3. Ax.) BG : But it has been shewn that BC is equal to BG ; wherefore AL and BC are each of them equal to BG ; and things that are equal to the same are equal to one another ; therefore the straight line AL is equal to BC.

Side 153 - 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 52 - To divide a given straight line into two parts, so that the rectangle contained by the whole, and one of the parts, may be equal to the square of the other part.

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 165 - SIMILAR triangles are to one another in the duplicate ratio of their homologous sides.