Final answer:
In geometry, Plane K can be alternatively named by using three non-collinear points on the plane, labeled as Plane ABC, or simply by a single cursive letter such as Plane K. Additional context is needed to provide a specific alternative name.
Step-by-step explanation:
In geometry, a plane is a flat, two-dimensional surface that extends infinitely in all directions. Plane K could be named in several ways depending on the context. Typically, a plane is named using at least three non-collinear points that lie on the plane. For example, if there are three points, A, B, and C on Plane K, and these points do not lie in a straight line, then Plane K can be referred to as Plane ABC. Another method is to name the plane by a single letter, often written in cursive, such as Plane K. However, without additional context or a diagram indicating points that exist on Plane K, it is not possible to provide a specific alternative name.