美國“數學大聯盟”分類詞匯?何1geometrical[d???'metr?kl]幾何的/幾何學的arc[ɑ?k]弧線/?。ǘ龋?反三角函數的角2angle['??g(?)l]角degree/degree-measure[d?'gri?]度數230degreeangle30°角acuteangle銳角rightangle直角straightangle平角perigon['periɡ?n]/roundangle周角obtuse(angle)[?b?tju:s]鈍角adjacent?'d?e?s(?)nt]鄰近的2adjacentangle鄰角interiorangle內角exteriorangle外角corner['k??n?]相交成角rectangular[rek't??gj?l?]成直角的/矩形的slope[sl??p]斜率，斜度/斜面1美國“數學大聯盟”分類詞匯?何點3midpoint['m?dpnt]中點，正中央intersection[?nt?'sek?(?)n]交叉點vertex['v??teks]頂點4side邊side-length邊長base[be?s]底邊/底部line[la?n]直線segment['segm(?)nt]段linesegment線段diagonal[da?'?g(?)n(?)l]斜的，對角線的/斜線，對角線hypotenuse[ha?'pt?nju?z]直角三角形的斜邊perimeter[p?'r?m?t?]周長circumference[s?'k?mf(?)r(?)ns]周長hyperbola[ha?'p??b?l?]雙曲線parabola[p?'r?b(?)l?]拋物線2美國“數學大聯盟”分類詞匯?何面5★表面與面積area['e?r??]面積face/surface['s??f?s]表面surfacearea表面積★shape形狀2三角形triangle['tra???g(?)l]三角形isosceles[a?'ss?li?z]等腰的2isoscelestriangle等腰三角形regular['regjl?]等邊的equilateral[,i?kw?'l?t(?)r(?)l]等邊的/等邊形regular/equilateraltriangle正/等邊三角形2scalene不等邊的/不等邊三角形congruent['k?grnt]全等的2congruenttriangle全等三角形3美國“數學大聯盟”分類詞匯2圓circle['s??k(?)l]圓semicircle['sem?s??kl]半圓circular['s??kj?l?]圓形的center?sent?(r)]中心，中心點2thecenterofacircle圓心radius['re?d??s]半徑diameter[da?'?m?t?]直徑2asemicirclewitharadiusof3centimeters一個半徑為3厘米的半圓interior[?n't???r??]內部的exterior[?k?st??ri?(r)]外部的intersect[??nt??sekt]相交inscribe[?n'skra?b]內切4美國“數學大聯盟”分類詞匯?何2多邊形polygon['pl?g(?)n]多邊形quadrilateral[?kw?dr??l?t?r?l]四邊形square[skwe?]正方形rectangle['rekt??g(?)l]矩形/長方形trapezoid['tr?p?zd]梯形parallelogram[,p?r?'lel?gr?m]平行四邊形pentagon['pent(?)n]五邊形/五角形hexagon['heks?g(?)n]六邊形/六角形octagon['kt?g(?)n]八邊形/八角形diamond['da??m?nd]菱形rhombus['r?mb?s]菱形sector['sekt?]扇形5美國“數學大聯盟”分類詞匯?何6cube[kju?b]立方（體）cubic['kju?b?k]立方（體）的prism['pr?z(?)m]棱柱pyramid['p?r?m?d]角錐/棱錐cylinder['s?l?nd?]圓柱cylindrical[s?'l?ndr?k?l]圓柱體的sphere[sf??]球體線/面的狀態、關系7straight[stre?t]直的horizontalr?'znt(?)l]水平的parallel['p?r?lel]平行的/平行線2AisparallelwithBA平行于Bvertical['v??t?k(?)l]垂直的/垂線perpendicular[,p??p(?)n'd?kjl?]垂直的/垂線2AisperpendiculartoBA與B成直角/A垂直于B6美國“數學大聯盟”分類詞匯?何symmetric[s?'metr?k]對稱的rotate[r?()'te?t]旋轉；循環rotation[r?()'te??(?)n]旋轉/循環tangent[?t?nd??nt]相切的/切線，正切8Ifthecircumferenceofacertaincircleisdividedbyπ,thequotientis8.Iftheareaofthesamecircleisdividedbyπ,thequotientisA)22B)4C)8D)16thecircumferenceof…的周長quotient商AisdividedbyBA除以Btheareaof…的面積2一個圓的周長除以π等于8；那么這個圓的面積除以π等于多少？（答案：D）Asquareandanequilateraltrianglehavethesameside-lengths,andthetotaloftheirperimetersis42.Whatistheareaofthesquare?A)6B)2