Ellen is drawing two polygons. One of the polygons has three more angles than the other. What shapes could she be drawing?

The attachment shows different types of polygons.Now depending on these we have following five possibilities:Case 1: Triangle and hexagonIf first polygon is triangle with three angles, the second will have 6 angles and the second polygon will be hexagon.Case 2: Quadrilateral and heptagonIf first polygon is quadrilateral with 4 angles, the second will have 4+3 =7 angles and the second polygon will be heptagon.Case 3: Pentagon and OctagonIf first polygon is pentagon with 5 angles, the second will have 5+3=8 angles and the second polygon will be octagon.Case 4: Hexagon and NonagonIf first polygon is hexagon with 6 angles, the second will have 6+3=9 angles and the second polygon will be nonagon.Case 5: Heptagon and DecagonIf first polygon is Heptagon with 7 angles, the second will have 7+3=10 angles and the second polygon will be decagon.