6.1.1　立体图形与平面图形 讲义（学生版+答案版） 2025-2026学年数学七年级上册人教版

INCLUDEPICTURE "第六章章头.tif" INCLUDEPICTURE "../../../../广东慧源同步上册/广东慧源七年级上册数学/第六章章头.tif" \* MERGEFORMAT INCLUDEPICTURE "../../第六章章头.tif" \* MERGEFORMAT INCLUDEPICTURE "../../第六章章头.tif" \* MERGEFORMAT INCLUDEPICTURE "../第六章章头.tif" \* MERGEFORMAT INCLUDEPICTURE "节.tif" INCLUDEPICTURE "../../../../广东慧源同步上册/广东慧源七年级上册数学/节.tif" \* MERGEFORMAT INCLUDEPICTURE "../../节.tif" \* MERGEFORMAT INCLUDEPICTURE "../../节.tif" \* MERGEFORMAT INCLUDEPICTURE "../节.tif" \* MERGEFORMAT INCLUDEPICTURE "节.tif" \* MERGEFORMAT 6.1　几何图形 6．1.1　立体图形与平面图形 eq \o(\s\up7( INCLUDEPICTURE "知识梳理.tif" INCLUDEPICTURE "../../../../广东慧源同步上册/广东慧源七年级上册数学/知识梳理.tif" \* MERGEFORMAT INCLUDEPICTURE "../../知识梳理.tif" \* MERGEFORMAT INCLUDEPICTURE "../../知识梳理.tif" \* MERGEFORMAT INCLUDEPICTURE "../知识梳理.tif" \* MERGEFORMAT INCLUDEPICTURE "知识梳理.tif" \* MERGEFORMAT ),\s\do5(　　　　　　　)) 知识点一　认识立体图形 1．有些几何图形(如长方体、正方体、圆柱、圆锥、球等)的各部分不都在同一平面内，它们是立体图形． 练习1　如图所示，陀螺是由几何体(　B　)组合而成的． INCLUDEPICTURE "../../../../广东慧源同步上册/广东慧源七年级上册数学/SX109.tif" \* MERGEFORMAT INCLUDEPICTURE "../../SX109.tif" \* MERGEFORMAT INCLUDEPICTURE "../../SX109.tif" \* MERGEFORMAT INCLUDEPICTURE "../SX109.tif" \* MERGEFORMAT INCLUDEPICTURE "SX109.tif" \* MERGEFORMAT A．圆和三角形 B．圆柱和圆锥 C．长方体和圆锥 D．长方形和三角形 总结　从各种物体抽象出的几何图形，不考虑它们的颜色、质量和材质，只关注它们的形状、大小和位置关系． 知识点二　认识平面图形 2．有些几何图形(如线段、角、三角形、长方形、圆等)的各部分都在同一平面内，它们是平面图形． 练习2　下面的四个几何图形中，表示平面图形的是(　B　). eq \o(\s\up7( INCLUDEPICTURE "../../../../广东慧源同步上册/广东慧源七年级上册数学/SX110.tif" \* MERGEFORMAT INCLUDEPICTURE "../../SX110.tif" \* MERGEFORMAT INCLUDEPICTURE "../../SX110.tif" \* MERGEFORMAT INCLUDEPICTURE "../SX110.tif" \* MERGEFORMAT INCLUDEPICTURE "SX110.tif" \* MERGEFORMAT ),\s\do5(A)) 　 eq \o(\s\up7( INCLUDEPICTURE "../../../../广东慧源同步上册/广东慧源七年级上册数学/SX110a.tif" \* MERGEFORMAT INCLUDEPICTURE "../../SX110a.tif" \* MERGEFORMAT INCLUDEPICTURE "../../SX110a.tif" \* MERGEFORMAT INCLUDEPICTURE "../SX110a.tif" \* MERGEFORMAT INCLUDEPICTURE "SX110a.tif" \* MERGEFORMAT ),\s\do5(B)) 　 eq \o(\s\up7( INCLUDEPICTURE "../../../../广东慧源同步上册/广东慧源七年级上册数学/SX110b.tif" \* MERGEFORMAT INCLUDEPICTURE "../../SX110b.tif" \* MERGEFORMAT INCLUDEPICTURE "../../SX110b.tif" \* MERGEFORMAT INCLUDEPICTURE "../SX110b.tif" \* MERGEFORMAT INCLUDEPICTURE "SX110b.tif" \* MERGEFORMAT ),\s\do5(C)) 　 eq \o(\s\up7( INCLUDEPICTURE "../../../../广东慧源同步上册/广东慧源七年级上册数学/SX110c.tif" \* MERGEFORMAT INCLUDEPICTURE "../../SX110c.tif" \* MERGEFORMAT INCLUDEPICTURE "../../SX110c.tif" \* MERGEFORMAT INCLUDEPICTURE "../SX110c.tif" \* MERGEFORMAT INCLUDEPICTURE "SX110c.tif" \* MERGEFORMAT ),\s\do5(D)) 总结　平面 ... ...