Tree Branches Optical Illusion

Which angle is larger, the angle between the green branches or the red branches?

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Believe it or not, the angle between the green branches is larger.

Ok... We even have this animation to show you.

Explanation

In this optical illusion, the branches of the red tree are so close as to make the angle seem larger than it really is. The branches in the green tree are so far apart, they don't seem to be able to take advantage of this phenomenon.