Here's why:
* Radial symmetry means an organism can be divided into equal parts along any plane that passes through the central axis. Think of a starfish or a jellyfish.
* Bilateral symmetry means an organism can be divided into two mirror-image halves along a single plane (like a human or a butterfly).
Since a spoke-like body form can be divided into equal parts from its central axis, it aligns with the definition of radial symmetry.