Kata

CORE DEFINITION

Shape is composed of an object or its external boundary, outline, and surface, independent of other properties such as color, texture, and material composition. Shape can also be a closed space formed by edges, curves, or a combination of both. Psychologists believe that people mentally decompose images into simple geometric shapes called geons. Cones and spheres are examples of geons. The shape of an object can be described using basic geometric objects such as points, lines, curves, and planes. For objects with more than two dimensions, the dimensionality of the shape can be reduced through cross-sections or projections. Shape is not affected by changes in viewpoint or orientation. However, mirror images can be considered different shapes. If the scale of an object changes, the shape may differ. For example, when the scale differs between the horizontal and vertical axes, a sphere becomes an oblate spheroid. That is, preserving the axis of symmetry is quite important in preserving shape. If two figures have the same shape, they are similar. Scaling changes size but not shape; rotation and translation preserve both size and shape.