### Home > CC2 > Chapter Ch1 > Lesson 1.1.1 > Problem 1-4

1-4.

Decide what the shapes below have in common. Write your answer in a complete sentence. Then draw two more shapes that belong to the same set.

Note: Many answers are possible.

Look for something true about all the shapes.

Consider things like:

-How many sides do they have?

-What types of angles do they all have?

-What names could describe all of them?

They all have at least one obtuse angle; they are all polygons.

Now, draw two more shapes that would belong to the set of shapes above.