Three Categories of Shape in Design

• Geometric Shapes Geometric shapes are any shapes that are based on mathematical principles such as triangles, squares, circles, and polygons. ...

According to Siddanth Pillai, the most common shapes—rectangles, circles, triangles, rhombuses, and hexagons—can be broken down into something like this:

• Rectangles/Squares: Balance and Tradition
• Circles: Infinity, Protection, and Femininity