初三数学专有名词
\u521d\u4e09\u6570\u5b66\u3002\u3002\u3002\u6c42\u52a9\uff01\uff01\uff01\u89d2CAB=105\u5ea6
\u89d2ACB=45\u5ea6
\u89d2ABC=30\u5ea6\u3002
AC=2*15\u6839\u53f72=30\u6839\u53f72\u5343\u7c73\u3002
\u505aAD\u5782\u76f4BC\u4e8eD\u3002
\u53ef\u4ee5\u5f97\u51fa\u4e09\u89d2\u5f62DAC\u662f\u7b49\u8170\u76f4\u89d2\u4e09\u89d2\u5f62\u3002\u4e09\u89d2\u5f62DAB\u662f\u6709\u4e2a\u89d2\u662f30\u5ea6\u7684\u76f4\u89d2\u4e09\u89d2\u5f62\u3002
AD=CD=AC/\u6839\u53f72=30\u5343\u7c73\u3002
AB=2AD=60\u5343\u7c73\u3002
BD=30\u6839\u53f73\u5343\u7c73\u3002
BC=CD+BD=30+30\u6839\u53f73\u5343\u7c73\u3002
\u4e59\u8239\u5230B\u7528\u65f6=AB/15=4\u5c0f\u65f6
2\uff09\u7532\u8239\u8ffd\u8d76\u4e59\u8239\u7684\u65f6\u95f4=4-2=2\u5c0f\u65f6\u3002
\u7532\u8239\u8ffd\u8d76\u4e59\u8239\u7684\u901f\u5ea6=BC/2=\uff0815+15\u6839\u53f73\uff09\u5343\u7c73/\u65f6
\u521d\u4e2d\u6570\u5b66\u82f1\u8bed\u540d\u8bcd
positive['p\u0251zətɪv] number \u6b63\u6570 negative ['nɛgətɪv] number \u8d1f\u6570
rational ['ræʃən!] number \u6709\u7406\u6570 number axis ['æksɪs] \u6570\u8f74
origin ['ɔrədʒɪn] \u539f\u70b9 opposite ['\u0251pəzɪt] number \u76f8\u53cd\u6570
absolute ['\u0251pəzɪt] value ['vælju] \u7edd\u5bf9\u503c power ['pauɚ] \u4e58\u65b9\uff0c\u5e42
base number\u5e95\u6570 exponent[ɪk'sponənt]\u6307\u6570
approximate [ə'pr\u0251ksəmɪt] number\u8fd1\u4f3c\u6570 significant [sɪg'nɪfəkənt] digit \u6709\u6548\u6570\u5b57
monomial [mə'nomɪəl] \u5355\u9879\u5f0f coefficient [,koɪ'fɪʃənt] \u7cfb\u6570
degree of a monomial \u5355\u9879\u5f0f\u7684\u6b21\u6570 polynomial [,p\u0251lɪ'nomɪəl] \u591a\u9879\u5f0f
term [tɝm] \u9879 constant ['k\u0251nstənt] term \u5e38\u6570\u9879
degree of a polynomial [,p\u0251lɪ'nomɪəl] \u591a\u9879\u5f0f\u6b21\u6570 equation ['k\u0251nstənt] \u65b9\u7a0b
integral ['ɪntəgrəl] expression [ɪk'sprɛʃən] \u6574\u5f0f solution [sə'luʃən] \u89e3
linear ['lɪnɪɚ] equation [ɪ'kweʃən] with one unknown \u4e00\u5143\u4e00\u6b21\u65b9\u7a0b net \u5c55\u5f00\u56fe
geometric [dʒɪə'mɛtrɪk] figure ['fɪgjɚ] \u51e0\u4f55\u56fe\u5f62
solid ['s\u0251lɪd] figure ['fɪgjɚ] \u7acb\u4f53\u56fe\u5f62 plane figure ['k\u0251nstənt] \u5e73\u9762\u56fe\u5f62
solid ['s\u0251lɪd] \u4f53 line \u7ebf
surface['sɝfɪs]\u9762 point \u70b9
intersection [,ɪntɚ'sɛkʃən] \u76f8\u4ea4 point of intersection \u7126\u70b9
center \u4e2d\u70b9 angle ['æŋg!] \u89d2
distance \u8ddd\u79bb angular ['æŋgjəlɚ] dissector \u89d2\u5e73\u5206\u7ebf
complementary [,k\u0251mplə'mɛntərɪ] angle \u4f59\u89d2 degree \u5ea6
supplementary [,sʌplə'mɛntəri] angle \u8865\u89d2
congruent ['k\u0251ŋgruənt] figures \u5168\u7b49\u5f62 symmetric[sɪ'mɛtrɪk] figure \u8f74\u5bf9\u79f0\u56fe\u5f62
congruent triangles ['traɪ,æŋg!] \u5168\u7b49\u4e09\u89d2\u5f62 axis of symmetry ['sɪmɪtrɪ] \u5bf9\u79f0\u8f74
symmetric points\u5bf9\u79f0\u70b9 radicand['rædə,kænd]\u88ab\u5f00\u65b9\u6570
perpendicular [,pɝpən'dɪkjəlɚ] bisector[baɪ'sɛktɚ]\u5782\u76f4\u5e73\u5206\u7ebf graph[græf]\u56fe\u8c61
isosceles [aɪ's\u0251s!,iz] triangle\u7b49\u8170\u4e09\u89d2\u5f62 variable['vɛrɪəb!]\u53d8\u91cf
equilateral [,ikwɪ'lætərəl] triangle \u7b49\u8fb9\u4e09\u89d2\u5f62 constant['k\u0251nstənt]\u5e38\u91cf
arithmetic [ə'rɪ\u03b8mətɪk] square [skwɛr] root\u7b97\u672f\u5e73\u65b9\u6839 real number\u5b9e\u6570
square root\u5e73\u65b9\u6839/\u4e8c\u6b21\u65b9\u6839 extraction [ɪk'strækʃən] of square root\u5f00\u5e73\u65b9
cube [kjub] root \u7acb\u65b9\u6839/\u4e09\u6b21\u65b9\u6839 extraction of cube root \u5f00\u7acb\u65b9
radical ['rædɪk!] exponent [ɪk'sponənt] \u6839\u6307\u6570 irrational [ɪ'ræʃən!] number\u65e0\u7406\u6570
function['fʌŋkʃən]\u51fd\u6570 independent [,ɪndɪ'pɛndənt] variable\u81ea\u53d8\u91cf
proportional [prə'porʃən!] function \u6b63\u6bd4\u4f8b\u51fd\u6570 linear ['lɪnɪɚ] function \u4e00\u6b21\u51fd\u6570
formula ['fɔrmjələ] for the difference of squares\u5e73\u65b9\u5dee\u516c\u5f0f
factoring ['fæktɚ] \u56e0\u5f0f\u5206\u89e3 formula for the square of the sum \u5b8c\u5168\u5e73\u65b9\u516c\u5f0f
common ['k\u0251mən] factor ['fæktɚ] \u516c\u56e0\u5f0f
adjacent [ə'dʒesənt] angles on a straight [stret] line \u90bb\u8865\u89d2
vertical ['vɝtɪk!] angles \u5bf9\u9876\u89d2 perpendicular [,pɝpən'dɪkjəlɚ] \u5782\u76f4
corresponding [,kɔrɪ'sp\u0251ndɪŋ] angles \u540c\u4f4d\u89d2 perpendicular line \u5782\u7ebf
alternate ['ɔltɚnɪt] interior [ɪn'tɪrɪɚ] angles \u5185\u9519\u89d2 foot of a perpendicular \u5782\u8db3
interior angles on the same side \u540c\u65c1\u5185\u89d2 parallel ['pærə,lɛl] \u5e73\u884c
proposition [,pr\u0251pə'zɪʃən] \u547d\u9898 theorem ['\u03b8iərəm] \u5b9a\u7406
translation [træns'leʃən] \u5e73\u79fb ordered pair \u6709\u5e8f\u6570\u5bf9
rectangular [rɛk'tæŋgjəlɚ] coordinate [ko'ɔrdnet] system ['sɪstəm] \u5e73\u9762\u76f4\u89d2\u5750\u6807\u7cfb
x-axis ['æksɪs] x\u8f74 y-axis y\u8f74
coordinate \u5ea7\u6807 quadrant ['kw\u0251drənt] \u8c61\u9650
triangle \u4e09\u89d2\u5f62 altitude ['æltə,tjud] \u9ad8
median ['midɪən] \u4e2d\u7ebf bisector [baɪ'sɛktɚ] of angle \u89d2\u5e73\u5206\u7ebf
polygon ['p\u0251lɪ,g\u0251n] \u591a\u8fb9\u5f62 diagonal [daɪ'ægən!] \u5bf9\u89d2\u7ebf
regular ['rɛgjəlɚ] polygon \u6b63\u591a\u8fb9\u5f62 linear equation of two unknows \u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b
system of linear equation of two unknows \u4e8c\u5143\u4e00\u6b21\u65b9\u7a0b\u7ec4 bar graph \u6761\u5f62\u56fe
substitution [,sʌbstə'tjuʃən] method ['mɛ\u03b8əd] \u4ee3\u5165\u6cd5inequality [ɪnɪ'kw\u0251lətɪ] \u4e0d\u7b49\u5f0f
addition [ə'dɪʃən] - substitution method\u52a0\u51cf\u6cd5 solution [sə'luʃən] set \u89e3\u96c6
linear equality [i'kw\u0251lətɪ] of one unknow \u4e8c\u5143\u4e00\u6b21\u4e0d\u7b49\u5f0f statistic [stə'tɪstɪk] \u7edf\u8ba1\u5b66
system of linear equality of one unknow\u4e8c\u5143\u4e00\u6b21\u4e0d\u7b49\u5f0f\u7ec4 pie chart [tʃ\u0251rt] \u6247\u5f62\u56fe
sampling ['sæmplɪŋ] survey \u62bd\u6837\u8c03\u67e5 histogram ['hɪstə,græm] \u76f4\u65b9\u56fe
population [,p\u0251pjə'leʃən] \u603b\u4f53 individual [,ɪndə'vɪdʒuəl] \u4e2a\u4f53
sample ['sæmp!] \u6837\u672c sample size [saɪz] \u6837\u672c\u5bb9\u91cf
simple random ['rændəm] sampling ['sæmplɪŋ] \u7b80\u5355\u968f\u673a\u62bd\u6837
frequency ['frikwənsɪ] distribution [,dɪstrə'bjuʃən] \u9891\u6570\u5206\u5e03
fraction in lowest terms \u6700\u7b80\u5206\u6570 reduction [rɪ'dʌkʃən] of a fraction \u7ea6\u5206
changing factions to a common denominator [dɪ'n\u0251mə,netɚ] \u901a\u5206
fractional equation \u5206\u5f0f\u65b9\u7a0b fraction ['frækʃən] \u5206\u5f0f
inverse [ɪn'vɝs] proportional [prə'porʃən!] function ['fʌŋkʃən] \u53cd\u6bd4\u4f8b\u51fd\u6570
hyperbola [haɪ'pɝbələ] \u53cc\u66f2\u7ebf parallelogram [,pærə'lɛlə,græm] \u5e73\u884c\u56db\u8fb9\u5f62
rectangle [rɛk'tæŋg!] \u77e9\u5f62 rhombus ['r\u0251mbəs] \u83f1\u5f62
square [skwɛr] \u6b63\u65b9\u5f62 trapezium [trə'pizɪəm] \u68af\u5f62
isosceles [aɪ's\u0251s!,iz] trapezium \u7b49\u8170\u68af\u5f62 barycenter \u91cd\u5fc3
weighted ['wetɪd] average ['ævərɪdʒ] \u52a0\u6743\u5e73\u5747\u6570 weight \u5168
median ['midɪən] \u4e2d\u4f4d\u6570 mode [mod] \u4f17\u6570
range [rendʒ] \u6781\u5dee variance ['vɛrɪəns] \u65b9\u5dee
quadratic [kw\u0251d'rætɪk function \u4e8c\u6b21\u51fd\u6570 similar figures ['fɪgjɚ] \u76f8\u4f3c\u56fe\u5f62
similar polygons ['p\u0251lɪ,g\u0251nz]\u76f8\u4f3c\u591a\u8fb9\u5f62proportional segments ['sɛgmənt] \u6bd4\u4f8b\u51fd\u6570
homothetic figures \u4f4d\u4f3c\u56fe\u5f62 sine [saɪn] \u6b63\u5f26\uff08sin\uff09
cosine ['kosaɪn] \u4f59\u5f26\uff08cos\uff09 tangent ['tændʒənt] \u6b63\u5207\uff08tan\uff09
trigonometric [,trɪgənə'mɛtrɪk] function of acute angle \u9510\u89d2\u4e09\u89d2\u5f62
projection [prə'dʒɛkʃən] \u6295\u5f71 parallel ['pærə,lɛl] projection \u5e73\u884c\u6295\u5f71
center projection \u4e2d\u5fc3\u6295\u5f71 view [vju] \u89c6\u56fe
algebraic [,ældʒə'breɪk] expression \u4ee3\u6570\u5f0f rotation [ro'teʃən] \u65cb\u8f6c
quadratic [kw\u0251d'rætɪk] equation in one unknow\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b root \u6839
centeral symmetry ['sɪmɪtrɪ] figure\u4e2d\u5fc3\u5bf9\u79f0 circle ['sɝk!] \u5706
center of a circle \u5706\u5fc3 radius['redɪəs]\u534a\u5f84
chord [kɔrd] \u5f26 diameter [daɪ'æmətɚ] \u76f4\u5f84
arc [\u0251rk]\u5f27 semi ['sɛmɪ] -circle \u534a\u5706
centeral angle \u5706\u5fc3\u89d2 angle in a circular segment ['sɛgmənt] \u5706\u5468\u89d2
circumcircle \u5916\u63a5\u5706 circumcenter \u5916\u5fc3
tangent ['tændʒənt] line\u5207\u7ebf inscribed circle \u5185\u5207\u5706
incenter \u5185\u5fc3 random ['rændəm] event [ɪ'vɛnt] \u968f\u673a\u4e8b\u4ef6
proability \u6982\u7387 tree diagram ['daɪə,græm] \u6811\u5f62\u56fe
\u3010\u6211\u7ed9\u4f60\u627e\u6765\u4e86\u521d\u4e2d\u6240\u6709\u7684\u6570\u5b66\u540d\u8bcd\uff0c\u56e0\u4e3a\u4e0d\u77e5\u9053\u521d\u4e09\u7684\u4ece\u54ea\u91cc\u65ad\u8d77
\u5e0c\u671b\u5bf9\u4f60\u6709\u5e2e\u52a9\u2014\u2014\u9006\u590f000
非负整数集 the set of all non-negative integers自然数集 the set of all natural numbers
正整数集 the set of all positive integers整数集 the set of all integers
有理数集 the set of all rational numbers
实数集 the set of all real numbers
属于 belong to
不属于 not belong to
有限集 finite set
无限集 infinite set
空集 empty set
包含 inclusion
包含于 lie in
子集 subset
真子集 proper set
补集(余补) complementary set
全集 universe
交集 intersection
并集 union
偶数集 the set of all even numbers
奇数集 the set of all odd number含绝对值的不等式 inequality with absolute value一元二次不等式 one-variable quadratic
inequality
逻辑 logic
逻辑联结词 logical connective
原命题 original proposition
逆命题 converse proposition
函数 function
自变量 argument
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绛旓細2. 鍩烘湰鏁板姒傚康��arithmetic mean 绠楁湳骞冲潎鍊� weighted average 鍔犳潈骞冲潎鍊� geometricmean 鍑犱綍骞冲潎鏁 exponent 鎸囨暟锛屽箓� base 涔樺箓鐨勫簳鏁,搴曡竟� cube 绔嬫柟鏁帮紝绔嬫柟浣� square root 骞虫柟鏍筩ube root 绔嬫柟鏍�common logarithm...
绛旓細瀵硅鍨嬬煩闃碉細瀵硅鐭╅樀(diagonal matrix)鏄竴涓富瀵硅绾夸箣澶栫殑鍏冪礌鐨嗕负0鐨勭煩闃碉紝甯稿啓涓篸iag锛坅1锛宎2,...,an) 銆傚瑙掔煩闃靛彲浠ヨ涓烘槸鐭╅樀涓渶绠鍗曠殑涓绉嶏紝鍊煎緱涓鎻愮殑鏄紝瀵硅绾夸笂鐨勫厓绱犲彲浠ヤ负 0 鎴栧叾浠栧笺傚噯瀵硅鐭╅樀锛氬噯瀵硅鐭╅樀鏃跺垎鍧楃煩闃垫蹇典笅鐨勪竴绉嶇煩闃碉紝鍗冲垎鍧楀悗鐨勭煩闃典负瀵硅鐭╅樀灏辩О涓哄噯...
