知识回放1.互为余角定义:如果两个锐角的度数的和是90度,那么这两个角叫做互为余角,简称互余.其中一个角称为另一个角的余角.2.互为补角定义:如果两个角的度数的和是180度,那么这两个角叫做互为补角,简称互补.其中一个角称为另一个角的补角.3.余角和补角的性质 Knowledge Replay 1. Mutual Clover Definitions: If the sum of the degrees of the two acute angles is 90 degrees, then these two angles are called mutual complement, abbreviated as each other, and one of them is referred to as the remaining corner of the other .2 If the sum of the degrees of the two angles is 180 degrees, then these two angles are called complementary angles and complementary ones, one of which is called the supplementary angle of the other. The nature of the complement