A,B, C and D are concyclic. AC bisects BD. If AB=9cm, BC = 8 cm, and CD= 6 cm, then find the
measure of AD.
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Answered by
2
here,
AB bisects BD
so, OD = OB .(1)
SO NOW ,
in triangle ABD ,
DA = AB
therefore : AD = 9cm
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zaira56:
but ans is 12 cm
Answered by
3
Answer:
Step-by-step explanation:By AA SIMILARITY,∆AOB~∆DOC
AB/CD=OB/OC
BY AA SIMILARITY,∆AOD~∆BOC
AD/BC=OD/OC
AC BISECTS BD. SO,OD=OB
AC/BC=OB/OC
THEREFORE,AD/BC=AB/CD
=>AD/8=9/6
=>AD=3/2×8=12 cm
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