chords AB and BD intersect at E in circle O, if AB is parallel to DC and measurement of angle B =40 what is measurement of angle D angle A angle DEC arc AD arc BC

In order for AB and BD to be chords, they must intersect at B, meaning B=E. There seems to be a typo in this question, unless E=B, which is redundant.

Please double check the question as there seems to be at typo.

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