Question

Please help from 3 -5

Answer 1

3. Pentagon and Regular Polygon
4.Triangle and Regular Polygon
5.Square and Triangle Put together not a Regular Polygon
3 explanation how i got the answer is cause the pentagon is well a pentagon so it would be a regular polygon
4. Explanation how i got the answer is cause the triangle is well still a triangle so it too would be a regular polygon.
5. Explanation how i got the answer is cause the Square and Triangle are 1 shape so it can not be a regular polygon. 

Does that make sense in how i got it ?
Good Luck Hope this helps.

Answer 2

3 and 4 are regular polygon and 5 is not