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 s't" 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

　　π pi(3.1415…)