Answer:
Pentagon
Step-by-step explanation:
In the pattern of shapes drawn by Liam, Each shape in the pattern has 1 more side than the shape before it.
If the first shape is a triangle
Let n=Number of Sides
When n=3, we have a Triangle
When n=4, we have a Quadrilateral
When n=5, we have a Pentagon
Therefore, the third shape in Liam's pattern is a Pentagon.
