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棱柱是立体几何中最常见的多面体,也是立体几何中较早接触的多面体,由于多种因素的制约,许多性质在证明时,常用举反例的方法,下面谈的就是关于棱柱中的两个经典错误反例。命题1有两个侧面垂直于底面的棱柱是直棱柱。
Prism is the most common polyhedron in three-dimensional geometry, and is also the polyhedron in three-dimensional geometry that is in early contact. Due to the constraints of many factors, many properties are often used to prove that counterexamples. The following discussion is about two classics in prisms. Error counterexamples. Proposition 1 A prism with two sides perpendicular to the base is a straight prism.