九角形

例句：

1. 1. The star was shining brightly in the sky, resembling a nine-pointed star.
   星星在天空中闪烁着，像是一个九角星。
2. 2. The shape of the planet is known as a nine-pointed star.
   这个行星的形状被称为九角星。
3. 3. The puzzle featured a nine-pointed star design on its surface.
   这个拼图的表面有一个九角星的设计。