Determine if points are Colinear.
(8,3), (5,2), (2,1)
sqrt (5 - 8)^2 + (2 - 3)^2
sqrt (-3)^2 + (-1)^2
sqrt 9 + 1
sqrt 10
sqrt (2 - 5)^2 + (1 - 2)^2
sqrt (-3)^2 + (-1)^2
sqrt 9 + 1
sqrt 10
sqrt (2 - 8)^2 + (1 - 3)^2
sqrt (-6)^2 + (-2)^2
sqrt 36 + 4
sqrt 40
sqrt 10 + sqrt 10 = 2(sqrt 10)
sqrt 40 = 2(sqrt 10)
so they are collinear.
Is this logical?
(8,3), (5,2), (2,1)
sqrt (5 - 8)^2 + (2 - 3)^2
sqrt (-3)^2 + (-1)^2
sqrt 9 + 1
sqrt 10
sqrt (2 - 5)^2 + (1 - 2)^2
sqrt (-3)^2 + (-1)^2
sqrt 9 + 1
sqrt 10
sqrt (2 - 8)^2 + (1 - 3)^2
sqrt (-6)^2 + (-2)^2
sqrt 36 + 4
sqrt 40
sqrt 10 + sqrt 10 = 2(sqrt 10)
sqrt 40 = 2(sqrt 10)
so they are collinear.
Is this logical?