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 revolution 直角 right angle 圆周circumference 圆心center 半径 radius 直径 diamet