“几何图形初步”一章是初中阶段“图形与几何”领域的基础,下面我们借助教科书上“几何图形初步”一章的一些例题、习题进行变式学习.例1(第118页“探究”)你还记得长方体和圆柱的展开图吗?图1是一些立体图形的展开图,用它们能围成什么样的立体图形?把它们画在一张硬纸片上,剪下来,折叠、粘贴,看看得到的图形和你想象的是否相同. The chapter “Introduction to Geometry” is the foundation of the junior high school and the field of “Graphics and Geometry.” Here we use the textbook “Geometry Preliminary” chapter of some examples, exercises for variant learning.Example 1 Page 118 “Inquiring”) Do you remember the unfolding of cuboids and cylinders? Figure 1 is an expanded view of some of the three-dimensional figures, using what they can encompass as a solid figure. Draw them on a piece of cardboard , Cut it down, fold it, paste it, and see if the graphics you get are the same as you think.