👉 Quadrista (also known as a quadrilateral) is an ancient geometric figure that has four sides, two of which are equal in length. This type of quadrilateral is often used in geometry and trigonometry for its properties related to circles, spheres, and other 3D shapes. In geometry, quadrista is also referred to as a regular pentagon (Pentagon) or a regular heptagon (Heptagon). These are special types of polygons that have all