Orientation and alignment misjudgement: new geometrical optical illusions?
Misjudgement of orientation is demonstrated in drawings of tilted quadrangles with parallel diagonals. Apparent misalignment of apices and/or line-segment ends is shown in drawings of differently oriented rectangle, angles, and line segments.
D006801:Humans; D007088:Illusions; D009903:Optical Illusions; D013028:Space Perception