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1题目再现(2013年天津市中考题)如图1,将△ABC放在每个小正方形的边长为1的网格中,点A、B、C均落在格点上。(1)△ABC面积等于____。(2)若四边形DEFG是△ABC所能包含的面积最大的正方形,请你在如图1所示的网格中,用直尺和三角尺画出该正方形,并简要说明画图的方法(不要求证明)。2再思考文献[1]对该题做了详细的讨论和深刻的反思,本文笔者从另一个角度谈谈对本题的认识和看法,不妥之处,请大家批评指正。对于第(2)问,笔者认为,标准答案和文献[1]中
1 Topic Reproduction (2013 Tianjin Test Questions) As shown in Figure 1, △ ABC is placed in a grid with each side of a small square with a length of 1, and points A, B and C are all located on the grid. (1) △ ABC area is equal to ____. (2) If the quadrilateral DEFG is the square with the largest area that ABC can contain, draw the square with a ruler and a ruler in the grid as shown in Figure 1, and briefly explain the method of drawing Request proof). 2 Reflections [1] made a detailed discussion and profound reflection on this issue. The author of this article talks about the understanding and view of this issue from another angle. What is wrong? Please criticize and correct it. For the first (2) asked, I believe that the standard answer and the literature [1]