题目

Winslow Homer was a famous American painter. Since Art History class in college，I had always admiredhis works andI was lucky to see a large exhibition of his works when I was in my early 30s. It was at this event that I bought a print of his painting “Snap the Whip”. It always hung in my classroom until I retired from teaching.I thought it truly captured the freedom andfun of childhood. In the painting，a group of young boys are playing a game arm in arm on the grass ground in front of a farm house. They are jumping and laughing wildly with great joy. One of the boys is falling down to 等边三角形的三条边长 ，三个 相等，都等于 度．