shapes recognition for shapes formed by dotted points In the image, below right corner there is circle shape and triangle shape made with set of co-ordninates.I have searched extensively in the net for algorithm or approach to classify shape correctly .And yet came up with nothing.I need approach or directions to solve this problem.
Use MINST dataset trained model, make predictions.

Look here. find the one with biggest accuracy, and the circle should be class that 
represents class of number 0.

EDIT: check this notebook where you can download your own images from google, annotate them andperform transfer learning relatively fast. Here
So you find all geometrical shape that you want and update some bigge model, or train your own from scratch