MCQOPTIONS
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MCQOPTIONS
| 1. |
In a quadrilateral ABCD, if the diagonals AC,BD intersect at right angles, then |
| A. | \[A{{B}^{2}}+B{{C}^{2}}=D{{C}^{2}}+D{{A}^{2}}\] |
| B. | \[A{{B}^{2}}+C{{D}^{2}}=B{{C}^{2}}+D{{A}^{2}}\] |
| C. | \[A{{B}^{2}}+A{{D}^{2}}=C{{B}^{2}}+C{{D}^{2}}\] |
| D. | \[A{{B}^{2}}+B{{C}^{2}}=2(D{{C}^{2}}+D{{A}^{2}})\] |
| Answer» C. \[A{{B}^{2}}+A{{D}^{2}}=C{{B}^{2}}+C{{D}^{2}}\] | |