Step One
Draw an equilateral triangle with sides of 2 triangle lengths each.
Connect the midpoints of each side.
How many equilateral triangles do you now have?
Shade out the triangle in the center. Think of this as cutting a hole in the triangle.

Step Two
Draw another equilateral triangle with sides of 4 triangle lengths each. Connect the midpoints of the sides and shade the triangle in the center as before.

Step Three
Draw an equilateral triangle with sides of 8 triangle lengths each. Follow the same procedure as before, making sure to follow the shading pattern. You will have 1 large, 3 medium, and 9 small triangles shaded.

Step Four
How about doing this one on a poster board? Follow the above pattern and complete the Sierpinski Triangle. Use your artistic creativity and shade the triangles in interesting color patterns. Does your figure look like this one? Then you are correct!