All the soldiers are the same height

All three are the same height.

All three men are the same height.

Are the fences vertical or horizontal?

Are the rectangles curved?

Are the spots black or white?

Are the steps facing up or down?

Are the teeth looking up or down?

Are you looking at the pages or the cover of the book?

Black and blue lines. There is no stripe.

Black and white.

Both horizontal lines have equal lenghts.

Can you count the eagles?

Can you see the face on the wall?

Can you see the faces in the picture?

Circles are perfectly round.

Clouds accompany the birds.

Confused columns?

Crucified?

Dice faces look distorted. (The image is Copyright Archimedes-Lab)