## Geometry Without Axioms; Or the First Book of Euclid's Elements. With Alterations and Familiar Notes; and an Intercalary Book in which the Straight Line and Plane are Derived from Properties of the Sphere ...: To which is Added an Appendix ... |

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Side 51

But whenever the contrary is not expressed, it is always the direct angle that is

meant. XXXVII. When a straight line standing on another straight line makes the

But whenever the contrary is not expressed, it is always the direct angle that is

meant. XXXVII. 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. Side 63

Also the third side DF is: equal to the third side EF; therefore the angle DCF is"

equal to ECF; and they are

one straight line makes with another straight line are equal to one another, each

...

Also the third side DF is: equal to the third side EF; therefore the angle DCF is"

equal to ECF; and they are

**adjacent angles**. But when the**adjacent angles**whichone straight line makes with another straight line are equal to one another, each

...

Side 65

1 above) be together equal to two right angles, and those on both sides will be

equal to four. PROPOSITION XIII. THEoREM.–If, at a point in a straight line, two

other straight lines, on the opposite sides of it, make the

...

1 above) be together equal to two right angles, and those on both sides will be

equal to four. PROPOSITION XIII. THEoREM.–If, at a point in a straight line, two

other straight lines, on the opposite sides of it, make the

**adjacent angles**together...

Side 67

triangle, on that side of DC on which is the angle that is less than the sum of two

right angles; and no point in the straight ... of the points of junction a straight line

drawn to such point makes the

, ...

triangle, on that side of DC on which is the angle that is less than the sum of two

right angles; and no point in the straight ... of the points of junction a straight line

drawn to such point makes the

**adjacent angles**together equal to two right angles, ...

Side 70

2. the remaining

the triangle CEF respectively, viz. those ... that the

less than two right

2. the remaining

**angles**of the triangle AEB are equal to the remaining**angles**ofthe triangle CEF respectively, viz. those ... that the

**angles**BAC, ACB are togetherless than two right

**angles**; and by prolonging a side**adjacent**to another**angle**, ...### Hva folk mener - Skriv en omtale

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Geometry Without Axioms Or the First Book Euclid's Elements: With ... Uten tilgangsbegrensning - 1833 |

Geometry Without Axioms; Or the First Book of Euclid's Elements. with ... Thomas Perronet Thompson Ingen forhåndsvisning tilgjengelig - 2015 |

### Vanlige uttrykk og setninger

ABCD adjacent angles alternate angles angle ABC angle ACB angle BAC angular points aret equal assigned point axis base BC bisected called CEGDHF central distances change of place circle coincide throughout Constr demonstrated double equal straight lines equal to AC equal to EF equilateral triangle Euclid exterior angle extremities four right angles Geometry given straight line greater hard body inclose a space instance INTERC Intercalary Book ist equal join line AC magnitude manner meet opposite angles parallelogram parity of reasoning pass perpendicular prolonged Prop PROPOSITION proved quadrilateral radii radius rectilinear figure remain unmoved remaining angle remains at rest respectively Scholium self-rejoining line shown side BC side opposite situation sphere whose centre straight line BC tessera THEOREM.–If third side triangle ABC tryo turned unlimited length Wherefore willf

### Populære avsnitt

Side 51 - 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 109 - PARALLELOGRAMS upon the same base, and between the same parallels, are equal to one another...

Side 111 - Parallelograms upon the same base and between the same parallels, are equal to one another.

Side 120 - If the square described on one of the sides of a triangle be equal to the squares described on the other two sides of it, the angle contained by these two sides is a right angle.

Side 72 - Any two sides of a triangle are together greater than the third side.

Side 55 - From the greater of two given straight lines to cut off a part equal to the less. Let AB and C be the two given straight lines, whereof AB is the greater.

Side 70 - Any two angles of a triangle are together less than two right angles.

Side 138 - ... the exterior angle equal to the interior and opposite on the same side of the line ; and likewise the two interior angles on the same side of the line together equal to two right angles.

Side 106 - THE straight lines which join the extremities of two equal and parallel straight lines, towards the same parts, are also themselves equal and parallel.