Lesson

Let's review the names of 2D shapes.

What is the name of the shape in the picture below?

Triangle

ARectangle

BTriangle

ARectangle

B

Let's look at how some familiar 2D shapes can be broken up into other shapes.

The shape below can be made up of which three shapes?

- ABCABC

Let's go the other way and put shapes together to build other shapes. It's kind of like a puzzle.

The five shapes below can be combined to make which of the following composite shapes?

- ABAB

Remember!

If we start with a two dimensional (2D) shape, we can break it into other 2D shapes. Likewise, we can join, or combine, shapes together to make new shapes.

Compare and describe two dimensional shapes that result from combining and splitting common shapes, with and without the use of digital technologies