Geometry is taught to establish a solid foundation in mathematics and spatial reasoning, promoting a comprehensive understanding of shapes, spatial relationships, and mathematical concepts. This Study of a Quadrilateral Book illustrates and describes 9 parts of a quadrilateral: common quadrilateral, sides, angles, vertexes, base, perimeter, area, altitudes, and diagonal. Includes: 9 picture pages9 description pagesThere are two styles of books included. The first style is approximately 3¾" x 5"