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前进命令

前进命令. F D. 说一说，下面的实线如何画？. 40. 20. 20. 20. 如果要画出下面的图形，如何去画呢？. 必须让小海龟爬行，但又不留痕迹 。. 提笔命令： PU 落笔命令： PD. PD FD 10 PU FD 5. 用 pu 、 pd 和 fd 命令画出下面的虚线。. 实线为 10 ，空格为 5 。. HOME 复位命令，让小海龟回到原始位置，并且方向始终朝上。. 想一想，右边的图形如何去画？. 用 HOME 命令让小海龟复位，小海龟会留下复位的轨迹。. 擦除命令： PE 运行 FD 200 PE BK 100. 20. 20.

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前进命令

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  1. 前进命令 F D

  2. 说一说，下面的实线如何画？ 40

  3. 20 20 20 如果要画出下面的图形，如何去画呢？ 必须让小海龟爬行，但又不留痕迹 。

  4. 提笔命令：PU 落笔命令：PD

  5. PD FD 10 PU FD 5 用pu、pd和fd命令画出下面的虚线。 实线为10，空格为5。

  6. HOME复位命令，让小海龟回到原始位置，并且方向始终朝上。

  7. 想一想，右边的图形如何去画？ 用HOME命令让小海龟复位，小海龟会留下复位的轨迹。

  8. 擦除命令：PE 运行 FD 200 PE BK 100

  9. 20 20 20 请用PE命令画一条虚线：

  10. PD FD 60 BK 10 PE BK 5 PU BK 10 PD PE BK 5 HT

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