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10-10.

Jenny made the following table while graphing a polar function. Find the function and describe its shape.

 $θ$ $r$ $0$ $\frac{\pi}{6}$ $\frac{\pi}{4}$ $\frac{\pi}{3}$ $\frac{\pi}{2}$ $\frac{2\pi}{3}$ $\frac{3x}{4}$ $\frac{5\pi}{6}$ $\pi$ $\frac{7\pi}{6}$ $\frac{5\pi}{4}$ $\frac{4\pi}{3}$ $\frac{3\pi}{2}$ $\frac{5\pi}{3}$ $\frac{7\pi}{4}$ $\frac{11\pi}{6}$ $2\pi$ $0$ $\frac{\pi}{12}$ $\frac{\pi}{8}$ $\frac{\pi}{6}$ $\frac{\pi}{4}$ $\frac{\pi}{3}$ $\frac{3\pi}{8}$ $\frac{5\pi}{12}$ $\frac{\pi}{2}$ $\frac{7\pi}{12}$ $\frac{5\pi}{8}$ $\frac{2\pi}{3}$ $\frac{3\pi}{4}$ $\frac{5\pi}{6}$ $\frac{7\pi}{8}$ $\frac{11\pi}{12}$ $\pi$

What is the shape of the graph of this function?