1) divide equal angles
等分角
2) trisection of an angle
三等分角
3) Sectrix plane
等分角平面
4) line
三等分角线
5) Trisection of an angle and Expansion with number field
三等分角与数域扩充
1.
1 Topics of the background and significance “Trisection of an angle and Expansion with number field”I developed high school division of school-based curriculum,“high school math elective courses on the topic”in a special topic, it will take into our secondary school curriculum content, the“ordinary high school mathematics curriculum standards,”the whole new arrangements.
1选题的背景和意义 “三等分角与数域扩充”是我校开发的高师校本课程《高中数学选修课程专题研究》中的一个专题,将它纳入我国中学课程选修内容,是《普通高中数学课程标准》的全新安排。
6) sub-section
等分
1.
The purpose of this study was to investigate the developmental characteristics in the early fraction of 3-6 year old kids,including the sub-section,amount ratio (comparison on the units),equivalence,and computing.
本研究的目的是考查3-6岁儿童早期分数概念的发展状况和年龄特点,其中包括等分、量比(单位量的比较)、等值、运算的发展状况和年龄特点。
参考词条
补充资料：三等分角问题
见“尺规作图不能问题”(977页)。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。