论文部分内容阅读
一、境空题1．（贵阳）边数为5的凸多边形内角和为＿度．2．（上海）有一个角是．的平行四边形叫矩形．1（广州）点0是oABCD对角钱的交点，若rtAOB的面积为6cm，则ryABrp的面积为。d．4．（天津）已知平行四边形的周长为56cm，两条邻边之比为4：3，则较长边是．cm．5．（浙江）
I. Ambient questions 1. (Guiyang) The internal angle of a convex polygon with 5 edges is __degree. 2. (Shanghai) There is a corner. The parallelogram is called a rectangle. 1 (Guangzhou) point 0 is the intersection point of oABCD for dime. If the area of rtAOB is 6cm, then the area of ryABrp is. d. 4. (Tianjin) It is known that the perimeter of a parallelogram is 56cm, the ratio of two adjacent sides is 4:3, and the longer side is. Cm. 5. (Zhejiang)