When to use SSS. SAS.ASA.AAS.HL in mathematics? Finally, give a few examples.
SSS: three sides correspond to congruence of two triangles, SAS: two sides and their included angles correspond to congruence of two triangles, ASA: two angles and their included angles correspond to congruence of two triangles, AAS: two angles and the opposite side of one angle correspond to congruence of two triangles. HL: The hypotenuse and the right-angled side correspond to the congruence of two right-angled triangles.