Page:Euclid's Elements 1714 Barrow translation.djvu/12

The Explication of the Signs or Characters.

=	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	Signifies	$\scriptstyle {\left\{{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right.}$	Equal.
				Greater.
				Lesser.
+				More, or to be added
−				Less, or to be subtracted
−:				The Differences, or Exceſs; Alſo, that all the quantities which follow, are to be ſubtracted, the Signs not being changed.
×				Multiplication, or the Drawing one ſide of a Rectangle into another. The ſame is denoted by the Conjunction of letters; as AB=A×B.
√				The Side or Root of a Square, or Cube &c.
Q & q				A Square.
C & c				A Cube.
Q.Q				The ratio of a ſquare number to a ſquare number

Other Abbreviations of words, where-ever they accur, the Reader will without trouble underſtand of himſelf; ſaving ſome few, which, being of leſs general uſe, we refer to be explained in their places.