The term GEOM. SHAPE is a combination of two words, 'GEOMETRY' and 'SHAPE'. GEOMETRY is a branch of mathematics that studies the properties of shapes, sizes, and relative positions of figures and objects in space. A SHAPE is an area or figure that is defined by its boundaries or outer lines. The crossword solution for this term is RECT, which is a four-letter word meaning 'RECTANGLE'. A RECTANGLE is a four-sided polygon with four right angles and two pairs of parallel sides. It is one of the most common shapes in GEOMETRY and is used in many everyday objects.