a diagonal of a cyclic quadrilteral passes through the centre of the circle....this quidrilateral can bea)parallelogramb)squarec)rectangled)rhombus???????PLS EXPLAIN!!!

IT IS A SQUARE

IN SQUARE EACH ANGLE IN 90DEG IT SATISFIES THE CONDITION ANGLE IN SEMI CIRLE IS RIGHT ANGLE IMPLIES IT MUST BE RADIUS OF THE CIRCLE AS THE RADIUS IS ALWAYS TAKEN THROUGH CENTRE OF CIRCLE 

hi,

i think it must be a square or rectangle becoz the angle in the square and rectangle is 90 degrees.as the diagonal passes through the centre angle in semicircle becomes 90degrees.

kedar joshi.