Welcome to AllensArea! This is a page for normal stuff.

4D Geometry

Types of 4D shapes
Basic shapes in 4D
Geometry of tesseract

Regulars in 4D
Infinite families
Stars in 4D

Hypersphere
Day-Night & seasons on 4D planet

Games

Word Riddle
Word Finder

Miscellaneous

Abbreviations

allenf.sakura.ne.jp since Jun '22