- A thin rectangular plate measuring 60 mm x 30 mm has its shorter 30 mm side along the vertical plane and inclined at 30 degrees to the horizontal plane. - The document provides step-by-step instructions for projecting the top view of the rectangular plate given that its front view is a 30 mm square. - The resulting top view projection is a trapezium with sides of lengths 30 mm, 60 mm, 30 mm and 60 mm and the shorter base making an angle of 30 degrees with the longer base.