## The Elements of Euclid: Viz, the First Six Books, Together with the Eleventh and Twelfth ; 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 |

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Side 37

The opposite sides and angles of parallelograms are equal to one another , and

the

parallelogram is a four sided figure , of which the opposite sides are parallel ; and

...

The opposite sides and angles of parallelograms are equal to one another , and

the

**diameter**bisects them , that is , divides them into two equal parts . N. B. Aparallelogram is a four sided figure , of which the opposite sides are parallel ; and

...

Side 43

The complements of the parallelograms which are about the

parallelogram , are equal to one another . Let ABCD be a parallelogram , of

which the

is ...

The complements of the parallelograms which are about the

**diameter**of anyparallelogram , are equal to one another . Let ABCD be a parallelogram , of

which the

**diameter**is AC , and EH , FG the parallelograms A H D about AC , thatis ...

Side 181

Let the parallelograms ABCD , AEFG be similar and similarly situated , and have

the angle DAB common : ABCD and AEFG are about the same

not , let , if possible , the paral A G D lelogram BD have its

Let the parallelograms ABCD , AEFG be similar and similarly situated , and have

the angle DAB common : ABCD and AEFG are about the same

**diameter**. For , ifnot , let , if possible , the paral A G D lelogram BD have its

**diameter**AHC in a ... Side 273

Q. E. D. PROP . XII . THEOR . Similar cones and cylinders have to one another

the triplicate ratio of that which the

and cylinders of which the bases are the circles ABCD , EFGH , and the

Q. E. D. PROP . XII . THEOR . Similar cones and cylinders have to one another

the triplicate ratio of that which the

**diameters**of their bases have . * Let the conesand cylinders of which the bases are the circles ABCD , EFGH , and the

**diameters**... Side 284

Let the spheres be cut by a plane passing through the centre ; the common

sections of it with the spheres shall be circles : because the sphere is described

by the revolution of a semicircle about the

that in ...

Let the spheres be cut by a plane passing through the centre ; the common

sections of it with the spheres shall be circles : because the sphere is described

by the revolution of a semicircle about the

**diameter**remaining unmoveable ; sothat in ...

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

The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ... Euclid,Robert Simson Uten tilgangsbegrensning - 1838 |

### Vanlige uttrykk og setninger

added altitude angle ABC angle BAC base centre circle circle ABCD circumference common cone 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 greater Greek half join less likewise magnitude 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 9 - Let it be granted that a straight line may be drawn from any one point to any other point.

Side 81 - The angles in the same segment of a circle are equal to one another.

Side 315 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.

Side 33 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.

Side 49 - 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 96 - If from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it ; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, shall be equal to the square of the line which touches it.

Side 155 - 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 22 - ANY two angles of a triangle are together less than two right angles.

Side 25 - Let A, B, C be the three given straight lines, of which any two whatever are greater than the third, viz.

Side 24 - Any two sides of a triangle are together greater than the third side.