Answer: the ASA Postulate
Explanation:
In the given picture , we have two triangles ∆LKM and ∆JKM , in which we have
[common]
By using ASA congruence postulate , we have
∆LKM and ∆JKM
ASA congruence postulate tells that if two angles and the included side of a triangle are congruent to two angles and the included side of other triangle then the triangles are congruent.