春九年级数学下册 第3章 圆习题课件 （新版）北师大版-（新版）北师大级下册数学课件.ppt

1圆....................................................................................................................................22圆的对称性...........................................................................................................213垂径定理................................................................................................................384圆周角和圆心角的关系第1课时圆周角定理..............................................................................57第2课时圆周角定理推论及圆内接四边形...........................................75专题（三）垂径定理与勾股定理.................................................................92专题（四）圆周角的综合运算......................................................................1015确定圆的条件...................................................................................................1106直线和圆的位置关系第1课时直线和圆的位置关系.....................................................................129第2课时切线的判定与三角形的内切圆.....................................................1477切线长定理.......................................................................................................165专题（五）切线的性质与判定.....................................................................1858圆内接正多边形.................................................................................................202专题（六）与圆的切线有关的证明与计算................................................2239弧形及扇形的面积............................................................................................241第三章复习与提升................................................................................................259