## The Elements of Euclid |

### Inni boken

Resultat 1-5 av 8

Side 101

GI First , let GB be equal to E , HD is equal A to F : make CK equal to F ; and

because AG is the same

and CK to F ; therefore AB is the same

the ...

GI First , let GB be equal to E , HD is equal A to F : make CK equal to F ; and

because AG is the same

**multiple**of E , that CH is of F , and that GB is equal to E ,and CK to F ; therefore AB is the same

**multiple**of E , that KH is of F . But AB , bythe ...

Side 106

proposition , there are some equimultiples of A and B , and some

such , that the

is not greater than that of C . Let such

proposition , there are some equimultiples of A and B , and some

**multiple**of Csuch , that the

**multiple**of A is greater than the**multiple**of C , but the**multiple**of Bis not greater than that of C . Let such

**multiples**be taken , and let D , E , be the ... Side 113

H mainder GK is the same

which is the same that LM is of CD . In like manner , because LM is the same

H mainder GK is the same

**multiple**of the remainder AE that GH is of AB ( 5 . 5 . ) :which is the same that LM is of CD . In like manner , because LM is the same

**multiple**of CD , that MN is of DF , the remainder LN is the same**multiple**of the ... Side 179

what

LV of the solid AV : for the same reason , whatever

base HF , the same

what

**multiple**soever the base LF is of the base AF , the same**multiple**is the solidLV of the solid AV : for the same reason , whatever

**multiple**the base NF is of thebase HF , the same

**multiple**is the solid NV of the solid ED ; and if the base LF ... Side 255

... B be taken , and any

the

than that of C ; but , from the hypothesis that A has a greater ratio to C , than B ...

... B be taken , and any

**multiple**whatever of C ; if the**multiple**of A be greater thanthe

**multiple**of C , then , by the 5th def . of book 5 , the**multiple**of B is also greaterthan that of C ; but , from the hypothesis that A has a greater ratio to C , than B ...

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added altitude angle ABC angle BAC base BC is given centre circle circle ABCD circumference common cone contained cylinder definition demonstrated described diameter divided double draw drawn equal equal angles equiangular equimultiples Euclid excess fore four fourth given angle given in magnitude given in position given in species given magnitude given ratio given straight line gles 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 reason rectangle rectangle contained remaining right angles segment shown sides similar sine solid sphere square square of BC taken THEOR third triangle ABC wherefore whole

### Populære avsnitt

Side 36 - If a straight line be divided into any two parts, the squares of the whole line and of one of the parts are equal to twice the rectangle contained by the whole and that part, together with the square of the other part. Let the straight line AB be divided into any two parts at the point C : the squares of AB, BC shall be equal to twice the rectangle AB, BC, together with the square of AC.

Side 145 - Wherefore, in equal circles &c. QED PROPOSITION B. THEOREM If the vertical angle of a triangle be bisected by a straight line which likewise cuts the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the segments of the base, together with the square on the straight line which bisects the angle.

Side 65 - The angle in a semicircle is a right angle; the angle in a segment greater than a semicircle is less than a right angle; and the angle in a segment less than a semicircle is greater than a right angle.

Side 248 - Again ; the mathematical postulate, that " things which are equal to the same are equal to one another," is similar to the form of the syllogism in logic, which unites things agreeing in the middle term.

Side 11 - If one side of a triangle be produced, the exterior angle is greater than either of the interior opposite angles.

Side 121 - 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 21 - 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 14 - To construct a triangle of which the sides shall be equal to three given straight lines ; but any two whatever of these lines must be greater than the third (20.

Side 80 - 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. either the sides adjacent to the equal...

Side 133 - ... rectilineal figures are to one another in the duplicate ratio of their homologous sides.