圆形circle;
半圆semi-circle;
方形square;
三角形triangle;
长方形rectangle;
菱形diamond;
五边形pentagon;
六边形hexagon;
七边形heptagon;
圆锥形cone;
圆柱形cylinder;
梯形trapezoid;
平行四边形parallelogram;
金字塔形pyramid;
椭圆形oval;
月牙形crescent;
Z字形zigzag
圆形circle;
半圆semi-circle;
方形square;
三角形triangle;
长方形rectangle;
菱形diamond;
五边形pentagon;
六边形hexagon;
七边形heptagon;
圆锥形cone;
圆柱形cylinder;
梯形trapezoid;
平行四边形parallelogram;
金字塔形pyramid;
椭圆形oval;
月牙形crescent;
Z字形zigzag