In the following description, the non axisymmetric figures are a, a triangle B with two equal internal angles, a right triangle C with an internal angle of 45 degrees and an internal angle of 60 degrees

In the following description, the non axisymmetric figures are a, a triangle B with two equal internal angles, a right triangle C with an internal angle of 45 degrees and an internal angle of 60 degrees

C analysis: for a pair, if two inner angles are equal, then both sides must be equal. (extension: in trapezoid, if two bottom angles are equal, then two waists are equal.) it must be an axisymmetric figure. For B pair, if there is a right triangle with an inner angle of 45 degrees, then the other inner angle must be 45 degrees. From the equality of two inner angles, it can be seen that two drugs are equal. Similarly, it must be an axisymmetric figure