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《中小学数学》(初中版)2012年3期魏祥勤的《探究一类正方形与等腰直角三角形构造的旋转问题》(以下称简“魏文”).文中的“把正方形与等腰直角三角形组合起来,探究组合图形中的线段之问的数量关系及位置关系”给了我很大的启发.笔者平时也比较注重此类试题的收集、整理与研究,精读了魏文之后尚有意犹未尽之感.于是,在原先教学积累的基础上我查阅
“Elementary and Middle School Mathematics” (Junior High School Edition) 2012 3 Wei Xiangqin’s “Exploring the Rotation Problem of a Square and Isosceles Right-angled Triangle” (hereinafter referred to as “Wei Wen”). Combined with the right triangle, the relationship between the number of lines and the relationship between the line segments in the combination of graphics "gave me a lot of inspiration.I usually pay more attention to the collection, collation and research of such questions, after reading Wei Wen I am still interested in finding out what I am trying to do, so I checked on the basis of my previous teaching