Pictorial Introduction to 'Graphics for The Blind'

Geometry

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Braille picture ½ size

Basic Editing in Geometry
Orthogonal sign replaced by braille code.
Orthogonal sign replaced by remark in text because there's no fitting palce to put braille code.
Equal-angles signs replaced by remark in text.
Equal-distances signs replaced by remark in text; to allow for that, characters P, Q and R were added.
Parallel-lines signs replaced by remark in text.
Arc not copied, Greek character preceded by braille code for 'angle.'
Length statement replaced by, or at least repeated in text.

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© 1989, 2002 Marco Schuffelen All Rights Reserved