初中数学【人教版】中英文词汇索引

统计学抽样检查频数直方图【八年级·上】三角形高中线角均分线多边形对角线正多边形全等形全等三角形轴对称图形对称轴对称点垂直均分线等腰三角形等边三角形平方差公式代入法加减法不等式解集一元一次不等式【七年级·上】有理数rationalnumber数轴numberaxis原点origin相反数oppositenumber绝对值absolutevalue乘方、幂power底数basenumber指数exponent近似数approximatenumber单项式monomial系数coefficient单项式的系数degreeofamonomial多项式polynomial项term常数项constantterm多项式的次数degreeofapolynomial整式integralexpression方程equation一元一次方程linearequationinoneunknown解solution几何图形geometricfigure立体图形solidfigure平面图形planefigure睁开图developingdrawing体solid面surface线line点point订交intersection交点pointofintersection中点midpoint距离distance定义definition角angle度degree角的均分线angularbisector余角complementaryangle补角supplementaryangle【七年级·下】邻补角adjacentanglesonastraightline对顶角oppositeangles垂直perpendicular垂线perpendicularline垂足footofaperpendicular同位角correspondingangles内错角alternateinteriorangles同旁内角interioranglesonthesameside平行parallel命题proposition定理theorem证明proof

平移translation算术平方根arithmeticsquareroot被开方数radicand平方根squareroot开平方extractionofsquareroot根指数radicalexponent无理数irrationalnumber实数realnumber有序数对orderedpair平面直角坐标系rectangularcoordinatesystemx轴x-axisy轴y-axis坐标coordinate象限quadrant二元一次方程linearequationintwounknowns二元一次方程组systemoflinearequationintwounknownssubstitutionmethodaddition-subtractionmethodinequalitysolutionsetlinearinequalityintwounknowns一元一次不等式组systemoflinearinequalityintwounknownsstatisticssamplingsurveyfrequencyhistogramtrianglealtitudemedianangularbisectorpolygondiagonalregularpolygoncongruentfigurescongruenttrianglesaxisymmetricfigureaxisofsymmetricsymmetricpointsperpendicularbisectorisoscelestriangleequilateraltriangleformulaforthedifferenceofsquares完整平方公式formulaforthesquareofthesum因式分解factorization公因式commonfactor分式fraction分式方程【八年级·下】二次根式代数式最简二次根式勾股定理平行四边形矩形菱形正方形变量常量自变量函数分析式图象正比率函数一次函数权加权均匀数中位数众数方差【九年级·上】一元二次方程约分reductionofafraction最简分式fractioninlowestterms通分reductionoffractionstoacommondenominatorfractionalequationquadraticradicalalgebraicexpressionsimplestquadraticradicalPythagorastheoremparallelogramrectanglerhombussquarevariableconstantindependentvariablefunctionanalyticexpressiongraphproportionalfunctionlinearfunctionweightweightedaveragemedianmodevariancequadraticequationinoneunknowns根root二次函数quadraticfunction旋转rotation中心对称centralsymmetry中心对称图形centralsymmetryfigure圆circle圆心centerofacircle半径radius弦chord直径diameter弧arc半圆semi-circle圆心角centralangle圆周角angleinacircularsegment外接圆circumcircle外心circumcenter切线tangentline内切圆inscribedcircle随机事件randomevent概率probability【九年级·下】反比率函数inverseproportionalfunction相像图形similarfigures相像多边形similarpolygon

相像比similarityratio相像三角形similartriangle位似图形homoth