## The Elements of Euclid for the Use of Schools and Colleges: Comprising the First Six Books and Portions of the Eleventh and Twelfth Books : with Notes, an Appendix, and Exercises |

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Side

We have first the general enunciation of the problem or theorem ; as for example ,

To describe an

angles of a triangle are together less than two right angles . After the general ...

We have first the general enunciation of the problem or theorem ; as for example ,

To describe an

**equilateral**triangle on a given finite straight line , or Any twoangles of a triangle are together less than two right angles . After the general ...

Side 3

Multilateral figures , or polygons , by more than four straight lines . . 24 . Of three -

sided figures , : An

rhomboid is that which has its opposite 1 - 2 DEFINITIONS .

Multilateral figures , or polygons , by more than four straight lines . . 24 . Of three -

sided figures , : An

**equilateral**triangle is that which has three equal sides : 33 . Arhomboid is that which has its opposite 1 - 2 DEFINITIONS .

Side 6

10 . Two straight lines cannot enclose a space . 11 . All right angles are equal to

one another . PROPOSITION 1 . PROBLEM . To describe an

12 . If a straight line meet two straight lines , so as to make the two interior angles

...

10 . Two straight lines cannot enclose a space . 11 . All right angles are equal to

one another . PROPOSITION 1 . PROBLEM . To describe an

**equilateral**triangle.12 . If a straight line meet two straight lines , so as to make the two interior angles

...

Side 7

PROPOSITION 1 . PROBLEM . To describe an

finite straight line . Let AB be the given straight line : it is required to describe an

circle ...

PROPOSITION 1 . PROBLEM . To describe an

**equilateral**triangle on a givenfinite straight line . Let AB be the given straight line : it is required to describe an

**equilateral**triangle on AB . From the centre A , at the distance AB , describe thecircle ...

Side 8

1 . and on it describe the

straight lines DA , DB to E and F . [ Post . 2 . From the centre B , at the distance

BC , describe the circle CGH , meeting DFat G . [ Post . 3 . From the centre D , at

the ...

1 . and on it describe the

**equilateral**triangle DAB , [ 1 , 1 . and produce thestraight lines DA , DB to E and F . [ Post . 2 . From the centre B , at the distance

BC , describe the circle CGH , meeting DFat G . [ Post . 3 . From the centre D , at

the ...

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The Elements of Euclid for the Use of Schools and Colleges Isaac Todhunter Uten tilgangsbegrensning - 1872 |

The Elements of Euclid for the Use of Schools and Colleges: With Notes, an ... Isaac Todhunter Uten tilgangsbegrensning - 1880 |

The Elements of Euclid for the Use of Schools and Colleges: Comprising the ... Euclid,Isaac Todhunter Uten tilgangsbegrensning - 1867 |

### Vanlige uttrykk og setninger

ABCD AC is equal angle ABC angle BAC Axiom base bisected Book centre chord circle ABC circumference common Construction Corollary Definition demonstration describe a circle described diameter difference divided double draw drawn equal equal angles equiangular equilateral equimultiples Euclid extremities fall figure fixed formed four fourth given circle given point given straight line greater half Hypothesis inscribed intersect join less Let ABC magnitudes manner meet middle point multiple namely opposite sides parallel parallelogram pass perpendicular plane polygon PROBLEM produced proportionals Q.E.D. PROPOSITION quadrilateral radius ratio reason rectangle contained rectilineal figure remaining respectively right angles segment shew shewn sides similar square straight line drawn suppose taken tangent THEOREM third triangle ABC twice Wherefore whole

### Populære avsnitt

Side 264 - 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.

Side 73 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a Right Angle; and the straight line which stands on the other is called a Perpendicular to it.

Side 264 - To draw a straight line at right angles to a given straight line, from a given point in the same. Let AB be...

Side 184 - 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 10 - THE angles at the base of an isosceles triangle are equal to one another : and, if the equal sides be produced, the angles upon the other side of the base shall be equal.

Side 300 - Describe a circle which shall pass through a given point and touch a given straight line and a given circle.

Side 60 - If 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 62 - If a straight line be divided into two equal, and also into two unequal parts, the squares on the two unequal parts are together double of the square on half the line, and of the square on the line between the points of section. Let the straight line AB be divided into two equal parts in the point C, and into two unequal parts in the point D ; The squares on AD and DB shall be together double of AD»+DB

Side 244 - Let AB and C be two unequal magnitudes, of which AB is the greater. If from AB there be taken more than its half, and from the remainder more than its half, and so on ; there shall at length remain a magnitude less than C. For C may be multiplied, so at length to become greater than AB.

Side 6 - Magnitudes which coincide with one another, that is, which exactly fill the same space, are equal to one another.