直线是构成几何图形的最基本元素。在D·希尔伯特建立的欧几里德几何的公理体系中，点、直线、平面属于基本概念，由他们之间的关联关系和五组公理来界定。那么你知道直线用英语怎么说吗?下面来学习一下吧。

直线的英语说法1：

beeline

直线的英语说法2：

straight line

直线的相关短语：

直线运动 rectilinear motion ; linear motion ; straight line motion ; motion in a straight line

直线回归 linear regression ; straight-line regression ; rectilinear regression

直线切削 linear interpolation ; straight cut ; linear interpol ; straightaway cut

直线经理 Line Manager

直线工具 line tool ; Straightedge Tool

直线的英语例句：

1. Her ear, shoulder and hip are in a straight line.

她的耳朵、肩膀和髋部呈一条直线。

2. Venus, the Sun and Earth all moved into line.

金星、太阳和地球都到了一条直线上。

3. Walk in a straight line.

沿直线行进。

4. In his art he broke the laws of scientific linear perspective.

他在自己的绘画艺术中打破了科学的直线透视法规律。

5. Are the lines perpendicular to each other?

这些直线相互垂直吗?

6. The pupil joined the two points by a straight line.

那个小学生用直线把两点连接起来.

7. A straight line is the shortest distance between two points.

直线是两点之间最短的距离.

8. Align the ruler and the middle of the paper.

使尺子与纸张的中部成一条直线.

9. The line AB intersects the line CD at E.

直线AB与直线CD相交于E点.

10. There is a straight line under the sentence.

句子下面有一条直线.

11. A straight line was ruled across the map.

一条直线横划在地图上.

12. The line cuts the circle at two points.

一条直线与圆相交于两点.

13. You are out of line with the others.

你和其他人不成一条直线.

14. He ruled the test paper carefully.

他小心地在考卷上画直线.

15. Theoretically, a line can extend into infinity.

从理论上来说直线可以无限地延伸.