Traditional Drawing Geometry teaching depends on compass, ruler and slide show etc. Learner finds it abstract.
传统的《画法几何》教学方法凭借的是圆规、尺子和幻灯等教具，抽象、枯燥是学习者的共同感受。
Generally no proof, just by the idea of painting, no a ruler and compass, but the Bank lines, straight lines and radius of graphics fold up to fit correctly ;
一般不打样，只凭构思绘画，也不用直尺和圆规，所画的中行线、直线和方圆图形，折叠起来能吻合不差；
You can use pens, a calculator, ruler and compass, as well as a letter sized piece of paper with anything written on it. No books or other material is allowed.
一张信纸大小的纸记录某些你要用的参考文字等，但不能带书或其他资料。
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