(小升初英语奥数题....doc

常用数学术语的英语表达： 1立方??? one cubic 1平方米???one square metre 几何??? geometry 点?? ??? point 线?????line 面??????plane 直线????a straight 曲线??? ?curved line 近似值???an approximate value 垂直线 ?? a vertical 水平线 ??a horizontal line 三角形的底?the base of a triangle 三角形的两个腰??the two sides of a triangle 直角????a rigt angle 锐角????an acute angl 钝角?? ? an obtuse angle 长方形 ?? a rectangle 正方形 ?? a square 多边形???a polygon 圆心 ??the centre of a circle 圆的直径 ? the diameter of a circle 圆的半径 ? the radius of a circle 半圆????a semicircle 弧?????an arc 圆柱体???a cylinder 球体????a spheroid ?常用加减乘除的英语表达： 四加五等于九?? If you add 4 to 5, you get 9. ???????? 或：If you add 4 and 5, you get 9. 五与四的和是九 ?4 and 5 are / make 9.? ???????? 或：The sum of 5 and 4 is 9. ???????? 或：Four plus five equals nine. 五减二等于三?? If you take 2 from 5, you get 3. ???????? 或：5 minus 2 equals 3. 五与二之差为三 The difference between 5 and 2 is 3. 二乘三等于六?? 2 times 3 is / equals 6. ???? ? ? 或：3 multiplied by 2 equals 6. 二与三的积为六 ?The proudct of 2 and 3 is 6. 六除以二等于三? If you divide 6 by 2, the answer is 3. ???? ???? 或：If you divide 2 into 6, the answer is 3. ??????????????????????????? 或：6 divided by 2 equals 3. ? 比较两个数字大小的英语表达： 6大于5??? 6 is greater than 5. ?? 或：6 is more than 5. 6小于7???? 6 is less than 7. ?  平方、立方及四次方的英语表达： 3的平方等于9 ???????? The square of 3 is 9. 3的立方等于27???? ?? The cube of 3 is 27. 3的四次方等于81????? The fourth power of 3 is / equals 81. ? 平方根立方根的英语表达： ?9的平方根为3?????? ?? The square root of 9 is 3. 27的立方根为3 ?????????The cube root of 27 is 3. ? 正比反比的英语表达： A与B成正比????? ????????A is in direct proportion to B. A与B成反比?????? ???????A is in inverse proportion to B. ? 两直线平行或垂直的英语表达： 直线AB平行于直线CD??? ?Line AB is parallel to Line CD 直线AB垂直于直线CD???? Line AB is perpendicular to Line CD 加 plus 减 minus 乘multiply 除divide 分母denominator 分子numerator 平方square 平方根 square root 二分之一 one half 二分之三 two thirds 三分之四 three fourth 内角interior angle 锐角 acute angle 钝角 obtuse angle 周角a complete revoluti