- Decompose and compose polygons into rectangles and triangles to find their area

We are experts in calculating the area of triangles and squares, now we would work together finding the area of complex polygons. The objective is to draw lines inside a polygon in order to break it down into triangles and parallelograms in order to use the formulas we already know.

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Decompose and compose polygons into rectangles and triangles to find their area

How to Decompose polygon

Watch the following video.

Let's start

We are going to start by drawing our polygon.

Now we can start braking it down into triangles and parallelograms..



Decomposing

We can break this polygon into 2 rectangles at the bottom, 1 triangle, and 1 parallelogram.

Now use the handout to try it and upload your work.. 

Hooray! Here you are!

Congrats on completing the course on decomposing polygons! 

You did a great job!