what is the color of two squares?
Which arc comes from the largest circle?
Which horizontal line is longer? - Hold a ruler up to the screen and you will be surprised to discover that the lines are the same length.
Look at the two inner circles. The one on the right appears bigger than the one on the left, but in actuality they are the same size. Hold up a dime to see for yourself.
In spite of what your eyes are telling you, the smaller off-center circle is actually perfectly round
How many legs does this elephant have?
Do the straight horizontal gray lines look curvy to you? Hold up a piece of paper to prove that they are straight and parallel to each other.
I am so sharp i am like a human buzz saw
Loading More Cards...
Change Wall Face
To change the wall face, drag the picture below and then click "Save"