a man is walking on the grass.he starts from a,and walks str

a man is walking on the grass.he starts from a,and walks straight along to the east for 3meters ..
a man is walking on the grass.he starts from a,and walks straight along to the east for 3meters ,then then left for 120° ,then walks straight along for 3meters and turn left for 120°again...
how far away is he from a when for 2005 meters?
请会的童鞋们 家长们帮帮忙喽

一个人从一片草地上的A点开始走,他先向正东直走3米,然后左转120度,再直走3米,再左转120度……
请问,当他走了2005米时,他离A点有多远?
这是奥数题吗
从题中得知 此人在走一个等边三角形 假设他走了2007米 2007/3= 669 669/3=223(个三角形) 也就是如果走2007米的话 正好回到出发点A 2007-2005=2 所以他走完2005米后 离A点的距离是2米