Tape (6) Geometry Roman Software Platform(s): ZX81, TS 1000 Date: 1982 Price: $8 Pythagorean Theorem and more. 8 programs. 1K. Media Related Content Articles Advertisements Syntax/Syntax ZX80 v3 n5 p. 21 Image Gallery Tags Miscellaneous Roman Software TS 1000 ZX81 Miscellaneous software People No people associated with this content.