说到对称,同学们很自然地就会想到轴对称图形.其实,在我们的数学大世界中,还有一些对称现象.下面就让我们一起来看看在数学运算中的对称现象吧!一、两位数乘两位数的对称等式我们很容易得到如下对称等式:12×42=24×21.13×93=39×31.不用怀疑,上面两个对称等式肯定是不 When it comes to symmetry, students naturally think of axisymmetric graphics. In fact, there are some symmetry in our math world, let’s take a look at the symmetry in math! , Two-digit by two-digit symmetry equation we can easily get the following symmetry equation: 12 × 42 = 24 × 21.13 × 93 = 39 × 31. Without any doubt, the above two symmetry equations are certainly not