2D shapes review

This is a closed 2D shape. True or false?

I have four sides, all closed and straight. What am I?

This shape is a quadrilateral. True or false?

I am a quadrilateral in which opposite sides are parallel. What could I be? (There are a few correct answers!)

I have 5 sides and five 5 vertices. What am I?

All of the pictures are quadrilateral. True or false?

I am a quadrilateral with four equal sides and four vertices. What am I?

I am a closed shape with three sides. What am I?