an isosceles trapezium ABCD, AB || DC and AD= BC. If ∠D=60°, AB= 18cm and AD= 12cm, find the length of DC?
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Ab = 18cm
Draw ae perpendicular to dc and bp perpendicular to dc
Now aegb is parallelogram
Now find dc by pytha goreous theorem
Draw ae perpendicular to dc and bp perpendicular to dc
Now aegb is parallelogram
Now find dc by pytha goreous theorem
Answered by
2
then the AB=DC then AB is 18is equl to DC
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