Euclid's plane geometry, practically applied; book i, with explanatory notes, by H. Green |
Inni boken
Resultat 1-5 av 5
Side 28
or together = two rt . angles . CASE I - Suppose that the ang . CBA is equal to ang
. ABD ; D . 11 by Def . 10 . then each of the angles is a right angle . CASE TI . —
But suppose that the angle CBA is not equal to angle ABD ; C . 11 by P . 11 .
or together = two rt . angles . CASE I - Suppose that the ang . CBA is equal to ang
. ABD ; D . 11 by Def . 10 . then each of the angles is a right angle . CASE TI . —
But suppose that the angle CBA is not equal to angle ABD ; C . 11 by P . 11 .
Side 37
Again , suppose _ BAC < LEDF ; 7 H . & P . 24 then base BC is base EF : | But BC
is * EF ; 9j Conc . 1 . : . BAC is x L EDF . 10 D , 5 & 9 . Now , _ BAC is E , nors , _
EDF ; 11 Conc . 1 . ĽBAC is > ZEDF . 12 Rec . Therefore , if two triangles have ...
Again , suppose _ BAC < LEDF ; 7 H . & P . 24 then base BC is base EF : | But BC
is * EF ; 9j Conc . 1 . : . BAC is x L EDF . 10 D , 5 & 9 . Now , _ BAC is E , nors , _
EDF ; 11 Conc . 1 . ĽBAC is > ZEDF . 12 Rec . Therefore , if two triangles have ...
Side 39
Suppose AC to measure 70 feet or yards , ang . A 909 , ang . ACB 66° ; at A make
a right angle , and on AC set of 70 equal parts ; at C draw an angle of 66° ; the
line CB will cut off B , the distance from A : let the distance from A to B be applied
...
Suppose AC to measure 70 feet or yards , ang . A 909 , ang . ACB 66° ; at A make
a right angle , and on AC set of 70 equal parts ; at C draw an angle of 66° ; the
line CB will cut off B , the distance from A : let the distance from A to B be applied
...
Side 48
Suppose an inch AB , divided into ten equal parts , each part will be 12 12 nch .
Again , suppose a line CD equal to 9 of these parts to be also divided into 10
equal parts , each of these will be 1 - 10th of 9 - 10th of an inch , which is 9 -
100th .
Suppose an inch AB , divided into ten equal parts , each part will be 12 12 nch .
Again , suppose a line CD equal to 9 of these parts to be also divided into 10
equal parts , each of these will be 1 - 10th of 9 - 10th of an inch , which is 9 -
100th .
Side 52
Hyp . Let the ASABC , DBC , be equal , A and on the same base BC , and on the
same side of it , 2 Conc . then the line joining A and D shall be to BC . C . Il by Pst
. 1 . Join A and D , then AD is BC ; 2 Sup . but suppose them not to be ll , 3 P . 31
...
Hyp . Let the ASABC , DBC , be equal , A and on the same base BC , and on the
same side of it , 2 Conc . then the line joining A and D shall be to BC . C . Il by Pst
. 1 . Join A and D , then AD is BC ; 2 Sup . but suppose them not to be ll , 3 P . 31
...
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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.
Bibliografisk informasjon
| Tittel | Euclid's plane geometry, practically applied; book i, with explanatory notes, by H. Green |
| Forfatter | Euclides |
| Redaktør | Henry Green |
| distribuert | 1863 |
| Original fra | Oxford University |
| Digitalisert | 14. nov 2006 |
| Eksporter sitat | BiBTeX EndNote RefMan |