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 ?supplementaryangles补角?complement aryangle余角?adjacent angle邻角 ?acuteangle锐角?obtuse angle钝角right angle直角 round angle周角 ?straightangle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?isoscelestriangle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
5.有关立体图形
cube立方体，立方数?rectangular solid长方体?regular solid/regular polyhedron正多面体 circular cylinder圆柱体cone圆锥?sphere球体?solid立体的
6.有关图形上的附属物
altitude高?depth深度?side边长?circumference,perimeter周长?radian弧度?surface area 表面积?volume体积arm直角三角形的股?cros ssection横截面?center ofacircle圆心 chord弦?radius半径?anglebisector角平分线?diagonal对角线?diameter直径?edge棱 face of a solid立体的面?hypotenuse斜边?includedside夹边?leg三角形的直角边 medianofatriangle三角形的中线?base底边，底数(e.g.2的5次方，2就是底数)opposite直角三角形中的对边?midpoint中点?endpoint端点?vertex(复数形式vertices)顶点?tangent切线的?transversal截线?intercept截距
7.有关坐标?
coordinate system 坐标系?rectangularcoordinate直角坐标系?origin原点?abscissa横坐标 ordinate纵坐标?numberline数轴?quadrant象限?slope斜率?complex plane复平面
8.其它
plane geometry平面几何?trigonometry三角学?bisect平分?circumscribe外切?inscribe内切 intersect相交?perpendicular垂直?pythagorean theorem勾股定理?congruent全等的 multilateral多边的?
