巧用口诀解“边边角”戴福元已知两边和其中一边的对角解斜三角形的问题，是教材中的一个难点。同学们在做题的常出现多解和丢解现象。下面提供的十二句口诀，旨在帮助同学们牢记“边边角”问题的解题程序和讨论方法。口决，钝（直）角类，见题先把角来看①钝（直）角只从... Cleverly use formulas to solve “edge” Dafoe known diagonal triangle on both sides and one side of the problem, is a difficult teaching material. Students often do multiple problems and discard the phenomenon. The twelve formulas given below are designed to help students keep in mind the problem solving process and discussion methods of the “corner” problem. Census, blunt (straight) angle class, see title first point of view ① blunt (straight) angle only from ...