Question

in the figure AB=AC. Prove that BD=BC​

Answer 1

Answer:

ANGLE BAD=40

ANGLE ABD=30

ANGLE ADB=180-30-40=110

ANGLE BDC=180-110=70

AB=AC

ANGLE ABC=ANGLE ACB=180-40=140/2=70

ANGLE BCD=BDC

SO BD = BC

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