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同学们,你们知道一笔画图形吗?如果用笔在纸上连续不断,又不走重复路线地一笔画出图形,那么这种图形就叫作一笔画图形.下面的每个图形你都能笔尖不离纸地一笔画出吗?试试看。
Students, do you know a stroke of drawing? If you use a pen to draw a line on a piece of paper without breaking the line, then this is called a stroke. Each of the shapes below you can tip Not drawn from the paper? Try it.