AEAS数学高频词汇-必备解答.doc

数学核心词汇 一：常见符号 ＋ 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) square root of cube root of ∥ 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 二： 常见几何计算公式 平面图形的周长和面积： Perimeter Area Triangle 三边之和 (底×高)/2 Square 边长×4 边长的平方 Rectangle (长+宽)×2 长×宽 Parallelogram (长+宽)×2 底×高 Trapezoid 四边之和 (上底+下底)×高/2 Rhombus 边长×4 两条对角线之积的1/2 Circle 2πr=πd πr2 立体图形的表面积和体积 Volume Surface Area Rectangular Prism 长×宽×高 2(长×宽+长×高+宽×高) Cube 棱长的立方 6×棱长×棱长 Right Circular Cylinder πr2h 2πr h(侧)+ 2πr2(底) *Sphere 4πr3/3 4πr2 Right Circular Cone πr2h/3 lr/2 (l为母线) 附录： SAT数学考试速查词汇 A Abscissa 横坐标 absolute value 绝对值 account for （数量）占 acute angle 锐角 acute triangle 锐角三角形 Add 加add to Addition 加，加法 Adjacent 相邻 adjacent angles 邻角 Algebra 代数学 algebraic expression 代数式 algebraic fraction 分式 algebraic term 代数项 Aliquot 除得尽数 Aliquant 除不尽数 alternate angles 内错角 Altitude 高度 Amount 合计 Angle 角 angle bisector 角平分线 Apex 顶，顶点 Apiece 每人，每个 Approximately 近似的，大约的 Approximation 近似，近似值 Arc 弧，圆周的任意一段 Area 面积 Arithmetic 算术 arithmetic(al) average 算术平均数 arithmetic(al) mean 算术平均数或等差中项 arithmetic(al) progression或series 算术级数，等差级数 assume that 假定义…… at random 随机地 at right angles with 与……成直角 at this rate 以这样的比率，价格或速度 Average 平均，平均数平均的 Axis 轴 B Balance 余额 b