如图,商业大厦与电视台大厦的大楼顶部各有一个射灯,当光柱相交时(它们都在同一个平面内),则∠1+∠2+∠3=______ °.
![](https://img.xkw.com/dksih/QBM/2012/6/3/1573397820096512/1573397858131968/STEM/9d2d2c5a49874179bd7f31851626d04b.png?resizew=66)
10-11七年级下·江苏南京·期中 查看更多[4]
(已下线)2010-2011学年江苏南京市第三初级中学七年级下学期期中考试数学卷北师大版八年级上第七章综合能力检测卷山东省德州市陵城区2021-2022学年七年级下学期期中考试数学试题江苏省扬州市宝应县东北片联考2021-2022学年七年级下学期第一次月考数学试题
更新时间:2016-12-05 01:09:02
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【知识点】 平行四边形性质和判定的应用
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