Verification: Triangle ABC is an isosceles triangle.

Proof: Make the angular bisector AD of △ABC.

∠BAD=∠CAD

In △BAD and △CAD

∠B=∠C

∠BAD=∠CAD

AD=AD

∴△BAD≌△CAD(AAS)

∴AB=AC (the corresponding sides of congruent triangles are equal)

Triangle ABC is an isosceles triangle.

This is my conclusion after meditation.

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