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

Find The Curved Line - Optical Illusion

8 MIND-BLOWING Optical Illusions - THESE ARE ALL STRAIGHT LINES

How many overlapping lines are there in this pic?

These circles change colours depending on where you look

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Braingle » 'Herring Illusion' Optical Illusion

Optical Illusion Vision Test: Are the Blue Lines Parallel? You Have 7 Seconds to Figure Out!

My brain hurts': Optical illusion asking people to find curved line has netizens feeling dizzy

Line Illusions

9 Optical Illusions to Confuse Your Brain – Scout Life magazine

The classical Hermann grid (above) and the sinusoid grid (below). In

Line Illusions

Solved In each graph below an optical illusion is created by

Seeing isn't believing: Mind-bending optical illusions

Game on! Check out these mind-bending puzzles and optical illusions