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RELFE BROTHERS' EUCLID SHEETS.

PROPOSITIONS 1—26, BOOK I, ARE NOW PUBLISHED IN A SIMILAR FORM TO THIS.

PROPOSITION III.

From the greater of two given straight lines to cut off a part equal to the less.

Let

and be the two given straight lines, of which

is the greater.

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Because

be equal to

is the center of the circle

therefore

straight line

is equal to

; whence

and

is equal to are each of them equal to ;

; but the

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RELFE BROTHERS, 6, CHARTERHOUSE BUILDINGS, LONDON, E.C.

PROPOSITIONS 1-26, BOOK I, ARE NOW PUBLISHED IN A SIMILAR FORM TO THIS.

PROPOSITION II.

From a given point, to draw a straight line equal to a given straight line.

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; and things that are equal to the same thing are equal to

; but it has been shewn that is equal to each of them equal to one another; therefore the straight line is equal to point a straight line

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Wherefore from the given has been drawn equal to the given straight line

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