11th Class
Mathematics
Sample Paper
Mathematics Olympiad - Sample Paper-5
question_answer
If \[\mathbf{A}\left( \mathbf{l},\mathbf{2} \right),\mathbf{B}\left( \mathbf{4},\mathbf{6} \right),\mathbf{C}\left( \mathbf{5},\mathbf{7} \right)\]and \[\mathbf{D}\left( \mathbf{a},\mathbf{b} \right)\]are the vertices of parallelogram ABCD then