The Montessori Geometry Cabinet Shapes 3-Part Cards help children learn the names and recognize various geometric shapes, enhancing vocabulary, spatial visualization, and lay a foundation for future geometry skills. This material includes: circle, curvilinear triangle, oval, ellipse, quatrefoil, square, rectangle, trapezoid (trapezium), rhombus, parallelogram, kite, chevron, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon, equilateral triangle, acute-angled isosceles trian