Geometric shapes are the building blocks of geometry, a branch of mathematics that studies the properties and relationships of points, lines, surfaces, and solids. Common geometric shapes include circles, squares, triangles, and rectangles. Each shape has unique characteristics, such as the number of sides or angles, which help us understand their properties and how they relate to one another. These shapes are not just theoretical; they appear all around us in everyday life. For example, the stop sign is an octagon, while a pizza is often circular. Recognizing these shapes helps us appreciate the patterns and structures in our environment.