GRE数学：常见运算符号的英文表达

　　新GRE数学常见符号英文表达：

　　= is equal to

　　 is not equal to

　　 is approximately equal to

　　 is greater than

　　 is greater than or equal to

　　 is less than

　　 is less than or equal to

　　根号 square root

　　0.888888 the repeating decimal

　　r st r degrees s minutes t seconds

　　　angle

　　∟ right angle

　　┻ is perpendicular

　　│x│ absolute value of x

　　∥ is parallel to

　　△ triangle

　　～ is similar to

　　≌ is congruent to

　　△x delta x

　　 pi