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几何图形丰富多彩,常见图形的性质是中考的重要内容.现以2014年的中考题为例,把图形性质的主要考点归类如下,供你复习时参考.考点1真假命题的判定例1(2014年铜仁卷)下列命题中,是真命题的是().A.对角线相等的四边形是矩形B.对角线互相平分的四边形是平行四边形C.对角线互相垂直的四边形是菱形D.对角线互相垂直且相等的四边形是正方形分析与解:命题有真假,正确的是真命题,错误的是假命题.选B.评点:以真假命题的方式考查图形的性质,知识容量大,需掌握常见图形的性质和判定方法.
Geometry is rich and colorful, the nature of the common graphics is an important part of the senior high school entrance examination. Now take the 2014 senior high school entrance examination questions as an example, the main test points of the graphic nature are grouped as follows, for your reference when reviewing. (2014 Tong Ren Juan) The following proposition is really proposition is (A.) A. Diagonally equal quadrilaterals are rectangles B. Diagonals bisect the quadrilaterals are parallelograms C. Diagonals perpendicular to each other quadrilateral Rhombus D. perpendicular to each other and the square is equal to the square analysis and solution: proposition true and false, the correct proposition is true, the false is a false proposition. B. Comments: the true and false proposition to examine the nature of graphics , Knowledge of large capacity, the need to grasp the nature of the common graphics and judgments.