平面立体的投影Projectionofaplanarsol

平面立体的投影Projectionofaplanarsolid主讲人：李帅Speaker:LiShuai教学目标Teachingobjectives1.了解平面立体的形成2.熟悉平面立体的投影规律3.掌握平面立体以及其上点的作图UnderstandtheformationofplanarsolidsFamiliarwiththeprojectionlawsofplanarsolidsMasterthedrawingofplanarsolidsandpointsonthem123目录CONTENTS认识平面立体平面立体的投影平面立体上点的投影UnderstandingplanarsolidsProjectionofaplanarsolidProjectionofPointsonaPlaneSolid4思考题Reflectionquestions1认识平面立体UnderstandingplanarsolidsONE基本立体BasicStereo基本立体BasicStereo平面立体planebody曲面立体curvedsolid棱柱yramid两个底面Twobottomsurfaces若干个侧棱面Severalsideedges一个底面Abottomsurface锥顶conicnode平面立体planebodyprism棱锥2平面立体的投影ProjectionofaplanarsolidTWO水平面horizontalplane正六棱柱的投影Projectionofregularhexagonalprism正六棱柱的投影Projectionofregularhexagonalprism正六棱柱的投影Projectionofregularhexagonalprism正平面frontalplane正六棱柱的投影Projectionofregularhexagonalprism正六棱柱的投影Projectionofregularhexagonalprism铅垂面verticalplane正六棱柱的投影Projectionofregularhexagonalprism各表面的投影Projectionofeachsurface平面立体的三视图Threeviewsofaplanarsolid各表面的交线及顶点EachsurfaceIntersectionlineandvertex正三棱锥的投影Projectionofaregularpyramid水平面horizontalplaneSBA垂直面verticalplane一般平面Generalplane正三棱锥的投影Projectionofaregularpyramid3平面立体上点的投影ProjectionofPointsonaPlaneSolidTHREE棱柱上的点Pointsonaprism棱柱上的点Pointsonaprism聚集性Aggregation棱柱上的点Pointsonaprism聚集性Aggregation不判断可见性Don'tjudgevisibility4思考题QuestionsFOUR12请思考如下问题Pleasethinkthefollowingquestions简述在棱锥表面上取点的作图过程?棱台是怎样形成的?其三视图有什么特点?Whatshouldbepaidattentiontowhenselectingviewsfordifferentparts?Howisthepris