import math


def distance(coordinate_tuple):
	"""Intake a coordinate tuple, return the distance between points"""
	x1 = coordinate_tuple[0]
	y1 = coordinate_tuple[1]
	x2 = coordinate_tuple[2]
	y2 = coordinate_tuple[3]

	dist = math.sqrt((x2-x1)**2 + (y2-y1)**2)

	return dist