A spiral galaxy can be described as having no distinct shape. The spiral structure is characterized by its arms that extend outward from the center, giving it a unique appearance that can vary widely among different spiral galaxies. However, it does not conform to traditional geometric shapes like triangular or oval. The term "pinwheel" can also be applicable, as spiral galaxies are often compared to pinwheels due to their rotating arms.
a spiral galaxy can be described as [blank]
No distinct shape
Triangular
Oval
PInewheel
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