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随着教育创新力度的加大,研究型试题日趋活跃,其中以图形旋转为背景的研究型试题更是频频亮相中考试卷.为方便同学们的学习,及时了解此类问题的动态,现归纳几例,供参考.一、理解、探究、应用例1(舟山)我们定义:有一组邻角相等的凸四边形叫做“等邻角四边形”.(1)概念理解:请你根据上述定义举一个等邻角四边形的例子.(2)问题探究:如图1,在等邻角四边形ABCD中,∠DAB=∠ABC,AD、BC的中垂线恰好交于AB边上一点P,连接AC、BD,试探究AC与BD的数量关系,
With the intensification of educational innovation, research-based test questions become more and more active, of which the research questions on the background of graphic rotation are more frequently appeared in the examination papers. In order to facilitate students’ learning and keep abreast of developments in such issues, Example 1, for example, to understand, explore, and apply Example 1 (Zhoushan) We define that there is a set of convex quadrilaterals with the same adjacency angle and are called “adjacent triangles”. (1) Concept understanding: An example of an equilateral quadrilateral (2) Problem Exploration: As shown in Figure 1, in the adjacent quadrilaterals ABCD, 中DAB = ∠ABC, AD, BC perpendicular perpendicular to the point just AB, P , BD, to explore the relationship between the number of AC and BD,