Single Lotus Leg Position
In general, the Buddha is depicted as sitting with the legs crossed. This leg position makes a “triangle” shape to the image; the knees making the two bottom points of the triangle shape, while the tip of the head makes the top point of the triangle. The significance is that a triangle shape is more “grounded” or has a more solid foundation.
Double Lotus Leg Position
Also called full lotus or padmasana seated position. Namely with both knees pointing downward and the ankles tucked on top of one another in the Double Lotus Position.
Learn More about: Other Mudras of Buddha Placement
Other Buddha Leg Position
There are a few postures that are not seated with crossed legs, namely the Maitreya Buddha, where the “Buddha of the Future” sits in a chair Western style. Also, there is a story of how a monkey and an elephant visited to make offerings to the Buddha, and in those images he is depicted sitting in a chair as well. There are standing Buddhas, and in Thailand, one of the most beloved forms is of the Walking Buddha statue, which is exclusive to the Sukhothai period of Thai art.
You May Wanna Know: Laughing Buddha – The Buddha of Happiness and Prosperity