please answer this
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Answer:
given BD=CD
BD+CD=BC
AD IS COMMON
PROOF:-
TAKE TRIANGLE ABD
WE KNOW THAT SUM OF 2SIDE OF TRIANGLE IS GREATER THE OTHER SIDE
THEREFORE
AB+AB>AD (eq 1)
TAKE OTHER TRIANGLE ACD
AC+CD>AD (eq 2)
add eq 1 and 2
AB+BC+CD>2AD (Since BD+CD=BC)
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