我国南宋著名数学家秦九韶(约1202—1261)被国外科学史家赞誉为“他那个民族,那个时代,并且确实也是所有时代最伟大的数学家之一”.他独立推出了“三斜求积”公式,求法是:“以小斜幂并大斜幂减中斜幂,余半之,自乘于上,以小斜幂乘大斜幂减上,余四约之,为实.一为从隅,开平方得积.”把以上这段文字写成从三条边长求三角形面积的公式,就是
.现如图,已知平面四边形
中,
,
,
,
,
,则平面四边形
的面积是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bd5fefb9a7c618d1ef8d73b3c43cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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2019高二上·浙江·学业考试 查看更多[4]
浙江省2019年6月普通高中学业水平考试数学试题1(已下线)浙江省2019年6月普通高中学业水平考试数学试题(已下线)2022年高考浙江数学高考真题变式题1-3题(已下线)2022年高考浙江数学高考真题变式题10-12题
更新时间:2020-03-14 14:01:01
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