新GRE考試中需要掌握哪些數學符號呢?眾所周知，參加中文的數學考試中有很多的數學符號，在新GRE數學考試中，這些符號也是很重要的，需要考生掌握，下面小編就給大家介紹一下GRE數學考試中的符號。
　　參加新GRE考試的考生可以來看看，需要掌握的新GRE數學考試符號如下：
　　+ plus ;positive
　　- minus ;negative
　　× multiplied by ;times
　　÷ divided by
　　= equals
　　≈ approximately equals
　　≠ not equal to
　　< less than
　　> greater than
　　≤ equal to or less than
　　≥ equal to or greater than o
　　( ) round brackets ;parentheses
　　[ ] square brackets
　　{ } braces
　　∈ is a member of the set
　　? is a subset of
　　∽ similar to
　　≌ congruent to
　　* denotes an operation
　　∴ therefore
　　∵ because
　　∶ ratio sign, divided by, is to
　　∷ equals, as(proportion)
　　∥ parallel to
　　⊥ perpendicular to, at right angles with
　　∠ angle
　　∟ right angle
　　o degree
　　′ minute
　　″ second
　　⊙ circle
　　A?B arc AB
　　e the base of natural logarithms,approx.2.71828
　　x! factorial x, x(x-1)(x-2)---1
　　lognx log x to the base n
　　π pi
　　lnx log x to the base e(natural logarithm)
　　lgx log x to the base 10(common logarithm)
　　|x| the absolute value of x