An octagon will have six triangles. So the sum of the interior angles of a polygon can be found by taking the number of sides, subtracting 2 and then multiplying by 180 The sum of the interior ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果一些您可能无法访问的结果已被隐去。
显示无法访问的结果