Two-dimensional (2D) shapes are completely flat. 2D shapes can be found printed in a book or on a website. 2D shapes have sides and corners. A rectangle has 4 straight sides and 4 corners. A square is ...

TRIANGLE: I’m a triangle. Of course I am, obviously you knew that. I’ve got three sides. And this, is Rectangle. You’re supposed to say hello, Rectangle. RECTANGLE: Hi TRIANGLE: You may well be asking ...