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UnderstandtheformationofplanarsolidsFamiliarwiththeprojectionlawsofplanarsolidsMasterthedrawingofplanarsolidsandpointsonthem
123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Reflectionquestions
1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Projectionofaregularpyramid
3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Dontjudgevisibility
4思考题QuestionsFOUR
12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?Howistheprismformed?Whatarethecharacteristicsofitsthreeviews?
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