Kata

Your task is to write a function angle_planes(lstPts) that calculates the angle between two planes, each of them being defined by a tuple of three points.

Input:

lstPts – list of 6 tuples that contain 3 coordinates: x, y and z for each point. The first three points are defining the first plane, the second three are for the second one. All coordinates are integers.

Output:

A float: the angle between the two planes in radians and rounded off to 2 decimal places.

Example:

angle_planes([(2,1,2),(1,2,2),(2,2,0), (2,0,0),(2,0,2),(0,2,2)])

Should return

0.34