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Question

Is the below statement true?
The bisectors of the base angles of an isosceles triangles are unequal.
Answer: No
If true then enter 1 else if False enter 0

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Solution

Given: ABC is an Isosceles triangle with AB = AC. BD bisects B and CE bisects C
To find whether BD = CE or not!
AB=AC (Given)
hence, B=C (Isosceles triangle property) (I)
12B=12C
DBC=ECB (II) (BD bisects B and CE bisects C)
Now, In BDC and FBC
BC=BC (Common)
C=B (From I)
DBC=ECB (From II)
Thus, BDCCFB (ASA rule)
Hence, BD=CE (By cpct)

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