50个形状英语单词如下： Circle-圆形、Square-正方形、Triangle-三角形、Rectangle-长方形、Oval-椭圆、Rhombus-菱形、Pentagon-五边形、Hexagon-六边形、Octagon-八边形、Star-星形、Crescent-新月形、Heart-心形、Diamond-钻石形、Arrow-箭头形 Cross-十字形、Spiral-螺旋形、Trapezoid-梯形、Cone-圆锥形、Cylinder-圆柱形、Sphere-球形、Cube-立方体形、Pyramid-金字塔形、Crescent-冠形、Hexahedron-六面体形、Tetrahedron-四面体形、Octahedron-八面体形、Dodecahedron-十二面体形