noun ダウンロード 🔗共有 五芒星 The shape of a five-pointed star constructed of five intersecting lines meeting at the vertices, such that a central pentagon and five surrounding isosceles triangles are formed; often with magical connotations; a 5/2 (or 5/3) star polygon. Examples : "The student drew a pentagram on the chalkboard for the math lesson on geometric shapes. " 生徒は、幾何学図形の数学の授業のために、黒板に五芒星を描きました。 figure math art religion mythology sign supernatural AIとチャット語彙ゲーム読解練習