Triangle ABC has vertices : A ( 1 , - 6 , 2 ) , B ( - 2, 3, - 5 ) and C ( 2, 7 , 6 ). 2 ) Find D such that ABCD is a parallelogram b ) Find the Area...

Please use the cross product and dot product at least once each in solving this question

2 . Triangle ABC has vertices : A ( 1 , - 6 , 2 ) , B ( - 2, 3, - 5 ) and C ( 2, 7 , 6 ).2 ) Find D such that ABCD is a parallelogramb ) Find the Area of parallelogram ABCDC ) Determine whether ABCD is a rectang ! "NB : use Cross Product and Do: Produce at least once each in solving this question