DUOBUY TECHNOLOGY SHANDONG CO., LTD. , https://www.doubuytech.comXiangjiao Version 8 upper 3.4 "The Judgment Theorem of Congruent Triangle" ppt Draw a triangle with an inner angle of 60 degrees, a side with this angle at 6 cm, and another side at 5 cm in length. In, if there are two sides and their angles correspond to equal, then these two triangles are congruent (abbreviated as SAS)
The decision theorem of congruent triangle ppt-Xiangjiao version eight courseware