A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.
四个
相等的
四形；不是直角的等四形。
A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.
四个相等的四形；不是直角的等四形。
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