James is the manager of moillusions.com. He spends his time finding the most popular optical illusions so that YOU keep coming back to your site for more! Check him out on https://plus.google.com/u/1/109932087769818686311/ View all posts by James Dean

Line AB is actually a few milimeters smaller.

*Puts trusty ruler away*

lines….*^ reaches out to touch teh lines ^*

if u dont actually look at the lines around it those 2 are the same

there are no lines

this is actually 3D. if you look at it as what’s closer to you and what’s further away…

they r exactly the same, rnt they?

O.M.G.

ugh BORING

number 8

ABC is a triangle, if you pull down a vertical line from B to AC, it’ll be in the exact center of AC, meaning AB and BC are exactly the same size :)

its equal because it makes a isoceles triangle if u take the lines away

Deathtrail, you confuse me.

Itz kwl still, line AB looks shorter….

they are all the same!!!

*fells smart*

eeehhhhhhhhhhhhhh confusin AB still look a lil bit smaller (even though there the same size)

i think bc is litle bit longer..

its all equall simple math

both the same…ac is also same lenght

both the same lenght, the line in the center is the one made you confusing,;-)

cover the horizontal lines across b and you will see!

its simple really

it only looks like line ab is shorter because of the line in the middle which is leaning towards ab