These are just a few vector illustrations by Beto Garza, AKA Helbetico. The artist favors the pen tool and simple shape tools, then uses the direct selection and pathfinder tools to directly alter anchor points/paths to create these reductive, often symmetrical, very flat illustrations.
I also found an interview with the artist discussing his favorite tools, steps in his creation process with these tools, and a little information about the artist himself! Take a ganderhere