Given: AB = AC Prove: ∠B = ∠C Statements Reasons 1. Given 2. Every angle has 1 bisector 3. Definition of bisector 4. Reflexive Property 5. SAS Postulate 6. CPCTC Construct a bisector of ∠BAD → ∠ZCAD AD = AD (Common Side) ∠ABD ≅ ∠ACD (Angle Bisector Theorem) ∠B ≅ ∠C (Corresponding Parts of Congruent Triangles are Congruent)
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