向ls
幼苗
共回答了23个问题采纳率:78.3% 举报
9米,具体要画图不是很好说-_-!
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简单的说一下,最左边表示人,1.5米,右边为树和影子,连接一下和水面有个交点,利用相似三角形可以算出交点离岸边为4米,影子就是9米,很简单的:)
1年前
9