Optical Illusion: Are these lines straight or do they bend

The cafe wall optical illusion posted on Twitter challenges people to figure out if the lines are straight or bend at an angle.  | Trending

This optical illusion made of straight lines may show you something else. Brain is bleeding, says Internet - India Today

Can Your Eyes See Past these Challenging Line Illusions? Optical illusions art, Optical illusions pictures, Illusions

30 Optical Illusions That Will Make Your Brain Hurt

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Mind-Bending Spatial Optical Illusions That Show How Line Lengths Seem to Vary With Use of End Arrows

Wait, so is this optical illusion straight or curved?

Braingle » 'Herring Illusion' Optical Illusion

The Impossible Triangle Optical Illusion: Draw and Build It! - Little Passports

These circles change colours depending on where you look

Straight Lines Look Bent

Seeing isn't believing: Mind-bending optical illusions