Chapter 4 - Congruent Triangles - 4-3 Triangle Congruence by ASA and AAS - Practice and Problem-Solving Exercises - Page 239: 14

△VWZ and △YWZ are congruent using Theorem 4-2 Angle-Angle-Side (AAS) Theorem

Proof: ∠V ≅ ∠Y is Given WZ bisects ∠VWY is Given ∠VWZ ≅∠ZWY - Definition of bisect WZ ≅ WZ - Reflexive Property of Congruence △VWZ ≅ △YWZ - Theorem 4-2 Angle-Angle-Side (AAS) Theorem