Blue Geometric Puzzle Set

Vintage Mini TANGOES puzzle game with the seven pieces arranged to form a shape that matches the outline on the accompanying card.  * A tangram is a Chinese dissection puzzle made of seven flat polygons called tans. 
 * The goal is to arrange all seven pieces to replicate a specific shape, typically given as an outline or silhouette. 
 * The seven pieces consist of two large right triangles, one medium right triangle, two small right triangles, one square, and one parallelogram. 
 * Each piece must be used, and none can overlap.