Answer: ASA Postulate.
Step-by-step explanation:
Given: ∠LKM ≅ ∠JKM, ∠LMK ≅ ∠JMK.
To Prove: ∆LKM ≅ ∆JKM
Proof: ∠LKM ≅ ∠JKM and ∠LMK ≅ ∠JMK are given.
Also, KM≅KM by the Reflexive Property of Congruence.
[The reflexive property of congruence says that any geometric shape is congruent to itself.]
∆LKM ≅ ∆JKM by the ASA Postulate congruence.
- ASA Postulate says that if two angles and the included side of a triangle are congruent or equal to the corresponding parts of another triangle, then the triangles must be congruent.