Ellen is drawing two polygons one of the polygons has 3 more angles than the other what shape could she be drawing

The smallest number of sides a polygon can have is 3 (triangle). If she draws a triangle, the larger figure must have 6 sides (hexagon).

If her smaller figure has 4 sides (quadrilateral), the larger must have 7 (heptagon).

If her smaller figure has 5 sides (pentagon), the larger must have 8 (octagon).

If her smaller figure has 6 sides (hexagon), the larger must have 9 (nonagon).

If her smaller figure has 7 sides (heptagon), the larger must have 10 (decagon).

This pattern could continue on and on until both of her figures resemble a circle.