虽然SAT数学考试中的几何所占有分值并不大，但也是大家考取数学满分必不可少的一部分，今天小编带大家来认识一下SAT 几何基础概念的学习，下面是详细内容。
Geometry 几何学
Lines and angels直线和角
Ray 射线
Line segment线段简称segment
Length长度
Congruent等长的
Angle角
Vertex顶点
Angles are classified according to their degree measures.
• An acute angle measures less than 90°.
• A right angle measures 90°.
• An obtuse angle measures more than 90° but less
than 180°.
• A straight angle measures 180°.
角可以按他们的度数来划分。
锐角是小于90°的角。
直角等于90°
钝角是大于90°小于180°的角。
If two or more angles form a straight angle, the sum of their measures is 180°.
如果一个或者多个角组成了一个平角，那么他们的和就是180°。
The sum of the measures of all the angles around a point is 360°.
绕着一个点的所有角度之和是360°。
Quadrilaterals四边形
Polygons多边形
line segments线段
sides
vertices顶点 vertex交点
diagonals对角线，斜线
five-sided polygon五边形
In any quadrilateral, the sum of the measures of the four angles is 360°.
在任意一个四边形中，四个角之和是360度。
The sum of the measures of the n angles in a polygon with n sides is (n – 2) × 180°.
在多边形中N个叫的和是(n – 2) × 180°
Exterior angle外角
In any polygon, the sum of the measures of the exterior: angles, taking one at each vertex, is 360°.
在任意一个多边形中，所有外角之和是360°。
Coordinate geometry坐标几何
X-axis X轴
Y-axis Y轴
Origin 原点
Quadrants象限
x-coordinate X坐标，横坐标
y-coordinateY坐标，纵坐标
• All the points on a horizontal line have the same y-coordinate. To find the distance between them,subtract their x-coordinates.
水平线上的所有点都有同样的纵坐标，求他们的距离就用他们的X坐标想减
• All the points on a vertical line have the same x-coordinate. To find the distance between them, subtract their y-coordinates.
所有垂直线上的点都有同样的X坐标，求他们的举例就用他们的额纵坐标相减
Circle 圆
A circle consists of all the points that are the same distance from one fixed point, called the center. That distance is called the radius
一个圆是由从同一个点出发的距离相等的点组合而成，这段距离叫做半径。
Radius半径复数是radii
Any triangle, such as △COD in the figure above, formed by connecting the endpoints of two radii is isosceles.
任意一个三角形，由圆心到圆上任意两点的连接组成的都是等腰三角形。
Diameter直径
以上就是对于SAT几何基础概念的介绍，相信大家已经有了基本的了解，很多刚刚备考的考生对于这种英语词汇还不是很敏感，接下来多做一些真题就会熟悉这种英文环境了。
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