The circle is perfectly round.

The horizontal lines in the middle are not sloped.

The lines are parallel to each other.

The lines are parallel to each other.

The spots in the junctions are just deception of your eyes.

The two floors has got be unconnected.

The two lines in the middle of each figure are not sloped.

The width and the height of the hat are the same.

There is one more gazelle within the branches

Three rods have equal length.

Tried counting the prongs in the figure?

Two old people, or...

What are these men doing?

What colour are the spots between the squares? Black or white?

What kind of a shelf is this?

Where are these holes? :)

Where is the green side back or front?

Where is the missing piece?

Which one is going to finish first? :)

Whose face is this?