2. 外语
  3. A geodesic dome is basically a spherical structure created from rectangles. According to the description of Buckminster Fuller,

A geodesic dome is basically a spherical structure created from rectangles. According to the description of Buckminster Fuller,

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问题 A geodesic dome is basically a spherical structure created from rectangles.
According to the description of Buckminster Fuller, the main advantage of a triangle in strength was ______ .
选项
答案stable and rigid/strong and rigid
解析 参见本文第六段第二句：The rectangle would fold up and be unstable but the triangle withstands the pressure and is much more rigid—in fact the triangle is twice as strong．
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