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Thefigureaboveconsistsof25squares,ifthefigurewerefoledalongthedotteddiagonaltoformaflattriangle,后面省略我的问题是什么是“dotted”diagonal什么事“flat”triangle

题目详情
The figure above consists of 25 squares,if the figure were foled along the dotted
diagonal to form a flat triangle,后面省略
我的问题是什么是“ dotted” diagonal
什么事“flat” triangle
▼优质解答
答案和解析
dotted diagonal:虚线画出的对角线
flat” triangle:平面三角形