The annunciation from various angles
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Here we find symmetry, triangular composition and to a certain extent, parallelism which affect the perception and experience of the illusion.
The gable of the table = symmetry. Maria is sitting in a triangular composition and her garments are parallel.
The strips of the door’s gable and the tiles on the corner of the wall focus the perspective towards Maria.
She is really sitting in a focused, perspectivistic corner.
The right-hand area of the picture is a dynamic illusion, while the left half is fixed.
Interestingly and consciously arranged