C-03-Q067mediumsingle_mcq
According to Ptolemy's theorem, in any cyclic quadrilateral, the rectangle contained by the two diagonals equals —
According to Ptolemy's theorem, in any cyclic quadrilateral, the rectangle contained by the two diagonals equals —
- aThe sum of the squares on the four sides
- bThe sum of the rectangles contained by the two pairs of opposite sides
- cHalf the sum of the squares of the diagonals
- dThe product of all four sides