While an axiomatic system sounds like something that maintains a spaceship full of homeless, nearly boneless hominids, it's actually a foundational construct that links a mathematical system together from simple principles to complex concepts.  Or something like that.

Geometry 11(B) determine the area of composite two-dimensional figures comprised of a combination of triangles, parallelograms, trapezoids, kites, regular polygons, or sectors of circles to solve problems using appropriate units of measure.