Can you join the nine trees with four lines?You can only cross an_英语解答

Can you join the nine trees with four lines?You can only cross another line.
九棵树是按3*3的九宫格排列的
123
456
789.只要回答从哪棵到哪棵连线就行.

人气：265 ℃　时间：2020-06-20 19:45:19

解答

突破点是不要只看那几个点,看成平面.在九个点外在找一个点开始画即可.什么意思●－－●－－●－－| \/| \ /●●●|\ /| /\●●●| /|/| /