## Euclid's plane geometry, practically applied; book i, with explanatory notes, by H. Green |

### Inni boken

Resultat 1-5 av 5

Side 25

By this Proposition , and

from two objects , as A and B , may be determined E without a theodolite .

Measure the distances AB , BC , CA , - and from a scale construct a triangle DEF ,

the ...

By this Proposition , and

**Prop**. 22 , the angle at a given point C , made by linesfrom two objects , as A and B , may be determined E without a theodolite .

Measure the distances AB , BC , CA , - and from a scale construct a triangle DEF ,

the ...

Side 27

Q . E . D . Sch . - 1 . This corollary should be ranked among the axioms ; for it is

assumed 1

portion of their length , they must coincide throughout . It is also assumed in

.

Q . E . D . Sch . - 1 . This corollary should be ranked among the axioms ; for it is

assumed 1

**Prop**. 4 , that if certain lines placed on one another coineide for anyportion of their length , they must coincide throughout . It is also assumed in

**Prop**.

Side 37

sides of the other , each to each , but the base of one greater than the base of the

other ; the angle contained by the sides of the one which has the greater base ...

**PROP**. 25 , - THEOR If two triangles have two sides of the one equal to the twosides of the other , each to each , but the base of one greater than the base of the

other ; the angle contained by the sides of the one which has the greater base ...

Side 49

Produce indefinitely the parallel DF , and at 11B and A , the extremities of the

other parallel AB raise , by

ABDF , will be converted into a rectangle ABCE , which by

equivalent to ...

Produce indefinitely the parallel DF , and at 11B and A , the extremities of the

other parallel AB raise , by

**Prop**. 11 , the perpendiculars BE and AC ; if thenABDF , will be converted into a rectangle ABCE , which by

**Prop**. 35 , isequivalent to ...

Side 61

A practical illustration of

proportion of 3 , 4 , and 5 , and constructing with them a rt . angled triangle BAC ;

on each of the three sides draw a square , and sub - divide each square ; that on

AC ...

A practical illustration of

**Prop**. 47 , may be given by taking three lines in theproportion of 3 , 4 , and 5 , and constructing with them a rt . angled triangle BAC ;

on each of the three sides draw a square , and sub - divide each square ; that on

AC ...

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### Vanlige uttrykk og setninger

ABCD added angle equal apply ascertain assumed Axioms base base BC bisected centre circle circumference coincide common Conc construct contained definition demonstration describe diagonal diameter distance divided draw drawn earth's equal Euclid extremity fall feet figure four Geometry given given point greater half height impossible inches inference intersect join length less line BC measure meet miles named object opposite parallel parallelogram perpendicular plane practical principle produced Prop proposition proved reason rectangle rectil rectilineal representative right angles scale sides square straight line suppose surface thing third triangle true truth units Wherefore whole

### Populære avsnitt

Side 36 - If two triangles have two angles of the one equal to two angles of the other, each to each, and also one side of the one equal to the corresponding side of the other, the triangles are congruent.

Side 17 - If a straight line meets two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...

Side 17 - Things which are equal to the same thing are equal to one another. 2. If equals be added to equals, the wholes are equal. 3. If equals be taken from equals, the remainders are equal. 4. If equals be added to unequals, the wholes are unequal. 5. If equals be taken from unequals, the remainders are unequal. 6. Things which are double of the same are equal to one another.

Side 41 - We assume that but one straight line can be drawn through a given point parallel to a given straight line.

Side 13 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.

Side 16 - LET it be granted that a straight line may be drawn from any one point to any other point.

Side 54 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.

Side 21 - If two angles of a triangle be equal to one another, the sides also which subtend, or are opposite to, the equal angles, shall be equal to one another.

Side 22 - Upon the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of the base, equal to one another, and likewise those which are terminated in the other extremity.

Side 12 - 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.