This is a regular shape but not a polygon because it doesn't have straight side, For equal lenght sides and four interior angles of 90°, Eight equal length sides and eight interior angles of 135°, Seven equal length sides and seven interior angles of 128.57°, Similar to square, it is also created by linking four line segment

排行榜

我們目前正在努力改進排行榜功能。請通過提供您的反饋來幫助我們。

提供反饋

視覺風格

選項

我們目前正致力於改善活動設定。請提供您的回饋來協助我們。

提供反饋

切換範本

恢復自動保存: ?