A half of a circle or a shape that is formed by a diameter and a curved line.

अर्धचक्र

English Usage: The garden is shaped like a semicircle, with flower beds lining the curved edge.

Hindi Usage: बगीचा अर्धचक्र आकृति में है, जिसमें फूलों के बिस्तर वक्र धार पर लगे हैं।