regular star polygon

regular non-convex polygon

en-GB/ˈɹɛɡjuːlə stɑːɹ ˈpɒlɪɡən/
en-US/ˈɹɛɡjəlɚ ˈstɑɹ ˈpɑliˌɡɑn/

カテゴリ：

concave polygonstar-shaped polygonregular polygon