1. First Shape (Rectangle) ⇒ Irregular
2. Second Shape (Triangle) ⇒ Regular
3. Third Shape (Decagon) ⇒ Regular
4. Fourth Shape (Arrow) ⇒ Irregular
5. Fifth Shape ⇒ Irregular
6. Sixth Shape (Square) ⇒ Regular
7. Seventh Shape (Hexagon) ⇒ Irregular
8. Eighth Shape (Pentagon) ⇒ Regular
9. Ninth Shape (Octagon) ⇒ Regular
10. Tenth Shape (Pentagon) ⇒ Irregular
Regular polygons are polygons that have equal measure of all of its sides.
Irregular polygons are polygons that have different measures of length of its sides.