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在同圆中同弦所对的圆周角

更新时间: 2020-07-05 00:00:00     

在同圆中同弦对应的圆周角在弦的同侧时,两圆周角相等,在两侧时,两圆周角互补。

解析:

1、同圆中同弦所对的圆周角在弦的同侧时,均等于圆心角的一半,即相等。

2、同圆中同弦所对的圆周角在弦的两侧时,两角所对圆周角之和为360度。而圆周角大小为所对圆心角的一半,即180度,亦即互补。

关键词: 圆周角

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