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An isosceles trapezium is given with the parallel sides and , the legs and measure each. The legs are extended to intersect at point , to form an isosceles triangle, . Calculate the length of side . (Hint: A sketch is required).
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is given with the parallel sides 
and 
, the legs 
and 
measure 
each. The legs are extended to intersect at point 
, to form an isosceles triangle, 
. Calculate the length of side 
. (Hint: A sketch is required).
