Answer:

1.pentagon

2.

3.hexagon

4.hexagon

5.triangle

Step-by-step explanation:

3 side (triangle)

4 side (quadrilateral)

5 side (pentagon)

6 side (hexagon)

7 sid (heptagon)

8 side (octagon)

9 side (nonagon)

10 side (decagon)

11 side (?)

12 side (undegon)

correct me if im wrong

Verified answer

1.hexagon

2.cross

3.rectangle

4.pentagon

5.triangle