Identify the polygon that is the shape of the united states flag.

rectangle

Step-by-step explanation:

Polygons are named according to the number of sides and angles they have. The most familiar polygons are the triangle, the rectangle, and the square. A regular polygon is one that has equal sides. Polygons also have diagonals, which are segments that join two vertices and are not sides.

chad should not have included the values (1, 2) and (3, 6) because that would mean he only had half a healing card.