6.?有关数论?natural number 自然数? positive number 正数? negative number 负数? odd integer, odd number 奇数? even integer, even number 偶数? integer, whole number 整数? positive whole number 正整数? negative whole number 负整数?? consecutive number 连续整数? real number, rational number 实数,有理数? irrational(number) 无理数?? inverse 倒数? composite number 合数 e.g. 4,6,8,9,10,12,14,15……? prime number 质数 e.g. 2,3,5,7,11,13,15…… 注意:所有的质数(2除外)都是奇数,但奇数不一定是质数 reciprocal 倒数?? common divisor 公约数? multiple 倍数? (least)common multiple (最小)公倍数?? (prime) factor (质)因子? common factor 公因子?? ordinary scale, decimal scale 十进制? nonnegative 非负的?? tens 十位? units 个位?? mode 众数? median 中数?? common ratio 公比??7.?数列arithmetic progression(sequence) 等差数列? geometric progression(sequence) 等比数列?? 8.?其它? approximate 近似? (anti)clockwise (逆) 顺时针方向? cardinal 基数? ordinal 序数? direct proportion 正比? distinct 不同的? estimation 估计,近似? parentheses 括号? proportion 比例? permutation 排列? combination 组合? table 表格? trigonometric function 三角函数? unit 单位,位?几何部分1. 所有的角alternate angle 内错角? corresponding angle 同位角? vertical angle 对顶角? central angle 圆心角? interior angle 内角? exterior angle 外角? supplementary angles 补角? complementary angle 余角? adjacent angle 邻角? acute angle 锐角? obtuse angle 钝角? right angle 直角? round angle 周角? straight angle 平角? included angle 夹角??2.?所有的三角形equilateral triangle 等边三角形? scalene triangle 不等边三角形? isosceles triangle 等腰三角形? right triangle 直角三角形? oblique 斜三角形? inscribed triangle 内接三角形??3.?有关收敛的平面图形,除三角形外?semicircle 半圆?concentric circles 同心圆? quadrilateral 四边形? pentagon 五边形? hexagon 六边形? heptagon 七边形? octagon 八边形? nonagon 九边形? decagon 十边形? polygon 多边形? parallelogram 平行四边形? equilateral 等边形? plane 平面? square 正方形,平方? rectangle 长方形? regular polygon 正多边形? rhombus 菱形? trapezoid 梯形??4.?其它平面图形arc 弧? line, straight line 直线? line segment 线段? parallel lines 平行线? segment of a circle 弧形? |