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- 鼠标点击获得点坐标，根据点坐标划线，根据线获取线的左右两边平行线-Mouse click to obtain point coordinates, according to the coordinates of points crossed, according to the line for line, parallel lines on both sides
pxxdxz
- flash制作的数学课件——平行线的性质-the nature of mathematics courseware- parallel lines flash production
line
- 在页面上画若干折现，显示其左右两条平行线 代码全-Several discount painting on the page to show its full code around two parallel lines
flex-lines
- 一个定点，做另一个点与这个点的直线和平行线-A fixed point, another point to make this point in a straight line and parallel lines