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b) If p, 2p°, 90° and 120° are the angles of a quadrilateral, find the size
of p° and 2pº.
c) If x°, 2x°, 3x° and 150° are the angles of a quadrilateral, find the size
of x°, 2x° and 3xº.
d) If 2aº, 3a°, 4aº and 6aº are the angles of a quadrilateral, find them.