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AMC8词汇Aabnormaldistribution非正态分布abscissa横坐标acuteangle锐角acutetriangle锐角三角形adjacentangle邻角amplitude振幅（anti）clockwise（逆）顺时针方向anglebisector角平分线algebra代数alternateangle内错角altitude高approximate近似的arc弧arcsine反正弦arccosine反余弦arctangent反正切arccotangent反余切arcsecant反正割arccosecant反余割arm直角三角形的股arithmetic算术arithmeticmean算术平均值arithmeticprogression(sequence)等差数列augend，summand被加数axis轴axiom公理Bbase底边，乘幂的底数(e.g.25，2是底数)bargraph条形统计图barycentre（BrE）,barycenter（AmE）重心bisect平分binarysystem二进制brokenlinegraph折线统计图Ccalculus微积分carry进位cardinal基数capacity容量centre（BrE）,center（AmE）圆心centralangle圆心角chord弦circumscribe外切circumcircle外切圆circumference圆周circularcylinder圆柱体coefficient系数column列coordinates坐标系commondivisor公约数commonfraction普通分数commonfactor公因子commonratio公比complexfraction繁分数complementaryfunction余函数compositenumber合数commonlogarithm常用对数combination组合complementaryangle余角concentriccircles同心圆cone圆锥congruent全等constant常量，常数consecutivenumber连续整数coordinatesystem坐标系cosecant余割cosine余弦cotangent余切correspondingangle同位角crosssection横截面curvediagram曲线统计图cube立方数，立方体cuberoot立方根cubicequation三次方程cylinder圆柱Ddenominator分母decimalfraction纯小数decimal小数degree角度denominator分母decimalsystem十进制derivative导数definiteintegral定积分determinant行列式decagon十边形decahedron十面体diagonal对角线diameter直径diamond菱形data数据differential微分directproportion正比distribution分布distinct不同的dividend被除数divisor除数dodecahedron十二面体dodecagon十二边形Eexcentre（BrE）,excenter（AmE）外心escentre（BrE）,escenter（AmE）旁心equilateralpolygon正多边形enneahedron九面体enneagon九边形ellipse椭圆edge棱equilateral等边形exteriorangle外角estimation估计，近似，估算exponent指数，幂equation方程Ffactorization因式分解factorial阶乘formula,formulae（pl.）公式fraction分数frustumofaprism棱台frustumofacone圆台Ggeometry几何graph图表geometricprogression(sequence)等比数列Hhypothesis,hypotheses（pl.）假设hendecahedron十一面体hexagon六边形heptahedron七面体hemisphere半球hexahedron六面体hendecagon十一边形heptagon七边形hexadecimalsystem十六进制histogram柱形统计图hypotenuse斜边hyperbola双曲线Iincentre（BrE）,incenter（AmE）内心icosahedron二十面体imag图象infinite（a.）infinity（n.）无穷大infinitesimal无穷小integrale积分isoscelestrapezoid等腰梯形indefiniteintegral不定积分inequation不等式insignificantdigit无效数字intersect相交imaginarynumber虚数isoscelestriangle等腰三角形inscribedcircle内切圆inequality不等式inversefunction反函数infinitedecimal无穷小数interiorangle内角inverse倒数intercept截距Llimit极限leg直角边locus,loca（pl.）轨迹literalcoefficient字母系数linesegment线段Mmatrix矩阵minuend被减数multiplicand被乘数,multiplicator乘数multilateral多边的monomial单项式monotonicity单调性mode众数median中数measure度量Nnormaldistribution正态分布nonagon九边形numerator分子numberline数轴numericalcoefficient数字系数Oobtuseangle钝角obtusetriangle钝角三角形oblique斜三角形octahedron八面体octagon八边形operator运算符operation运算orthocentre（BrE）,orthocenter（AmE）垂心origin原点ordinal序数ordinate纵坐标opposite直角三角形中的对边Pparallel平行parallelogram平行四边形parentheses括号parallelepiped平行六面体parabola抛物线parity奇偶性periodicity周期性perimeter周长perigon周角permutation排列pentagon五边形perpendicular垂直percent百分比percentage百分点percentile百分位数pentahedron五面体phase相位plane面piediagram扇形统计图polynomial,multinomial多项式polygon多边形polyhedron多面体properfraction真分数probability概率，或然率proportion比例proposition命题prism棱柱pyramid棱锥Pythagoreantheorem勾股定理Qquotient商quadraticequation二次方程quarticequation四次方程quadrilateral四边形quadrant象限Rrighttrapezoid直角梯形root-mean-squaredeviation标准差remainder差ratio比range值域radial射线radian弧度radius半径randow随机rotation旋转row行rhomb,rhombus,rhombi（pl.）菱形ring环range值域recurringdecimal循环小数reciprocal倒数regularpolygon正多边形rectangularsolid长方体regularsolid/regularpolyhedron正多面体rectangularcoordinate直角坐标系Ssignificantdigit有效数字simpleequation一次方程solid体segment线段straightangle平角scalenetriangle不等边三角形sphere球，球体statistics统计subtrahend减数series数列，级数secant正割semicircle半圆sector扇形supplementaryangles补角surfacearea表面积slope斜率standarddeviation标准差Ttangent切线的tetrahedron四面体trapezoid梯形transversal截线truncation截尾trigonometry三角，三角学Uunknown,x-factor,y-factor,z-factor未知数undersurface底面Vvariable变量Variance方差verticalangle对顶角vertex(复数形式vertices)顶点volume体积vulgarfraction普通分数Wweight,significance权weightedaverage加权平均数Xx-axis,y-axis,z-axis坐标轴x-coordinate横坐标Yy-coordinate纵坐标