In a rectangle MPKN, the diagonals intersect each other at point O. A line segment OA, is an altitude of a triangle MOP, and m∠AOP = 18°. Find the measure of ∠ONK.

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number