Answer :
Pictures of a figure with rotational symmetry and an order of 4 & a figure with 3 lines of symmetry are in the attachments but i am not sure about the 3rd one. I think every polygon has a line of symmetry or a rotational symmetry but i am not sure..
A square has a rotational symmetry with an order of 4.
A triangle has 3 lines of symmetry :)
A square has a rotational symmetry with an order of 4.
A triangle has 3 lines of symmetry :)
![View image secret13](https://us-static.z-dn.net/files/de7/281ec2ed12dd777567d3c75256580fdb.png)
![View image secret13](https://us-static.z-dn.net/files/d4e/4c94a80a5cf10ee0d204da6c256c17ce.png)