1) I have triangular faces and a square base. I have 5 vertices. What am I? 2) I have 5 faces, only two of them are triangles. What am I? 3) I have a curved boundary and 3 surfaces. What am I?

Properties of Three-Dimensional Objects

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?