美国数学竞赛AMC8考试必备词汇(字母排序)

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1、AMC8词汇Aabnormaldistribution非正态分布abscissa横坐标acuteangle锐角acutetriangle锐角三角形adjacentangle令卩角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

2、角形的股arithmetic算术arithmeticmean算术平均值arithmeticprogression(sequence)等差数歹Haugend?summand被力口数axis轴axiom公理Bbase底边，乘幕的底数(e.g.22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(Am

3、E)圆心centralangle圆心角chord弦circumscribe夕卜切circumcircle夕卜切圆circumference圆周circularcylinder圆柱体coefficient系数column歹口coordinates坐标系commondivisor公约数commonfraction普通分数commonfactor公因子commonratio公比complexfraction繁分数complementary7function余函数compositenumber合数commonlogarithm常用对数combinati

4、on组合complementaryangle余角concentriccircles同/芒圆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decimal&action纯

5、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),ex

6、center(AmE)夕卜心escentre(BrE),escenter(AmE)旁丿卞equilateralpolygon正多边形enneahedron九面体enneagon九边形ellipse椭圆edge棱equilateral等边形exteriorangle夕卜角estimation估计，近似，估算exponent指数,幕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Ggeom

7、etry几何graph图表geometricprogrcssion(scqucncc)等比数列Hhypothesis,hypotheses(pl.)彳段设hendecahedronH面体hexagon六边形heptahedron七面体hemisphere半球hexahedron六面体hendecagonH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

8、象infin让e(a.)infinity(n.)无穷大infinitesimal无穷小integrale积分isoscelestrapezoid等腰梯