大家都知道,解答平面几何或立体几何问题时,经常需要添加辅助线,有时只因一条辅助线未作出,就会感到束手无策,不知从何入手.假如在老师或同学指导下,适当添上辅助线则会柳暗花明,豁然开朗.下面让我们一起走进物理天地,看看解题过程中辅助线的妙用. Everyone knows that when answering plane geometry or solid geometry problems, it is often necessary to add an auxiliary line. Sometimes, because an auxiliary line is not made, you will feel helpless and do not know where to start. If you are under the guidance of a teacher or classmate, add appropriate auxiliary lines. Will be bright and clear, suddenly see the light. Let us walk into the physical world, take a look at the usefulness of the auxiliary line in the process of solving problems.