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πολύεδρον app for iPhone and iPad


4.8 ( 4028 ratings )
Education Education
Developer: elizabeth r chen
0.99 USD
Current version: 2018.0808, last update: 4 years ago
First release : 13 Aug 2018
App size: 2.09 Mb

πολύεδρον 2D
¡¡the world’s most sophisticated polyhedron 2D viewer!!

explore 2D tessellations in elliptic/parabolic/hyperbolic space
select any trigonal symmetry group, based on 3 trigonal vertices
set polygonal edge lengths, using barycentric trigonal co·ordinates
select stereographic/gnomonic/orthogonal 3D▻2D projection
translate/rotate in 2D
choose your favorite colors & elements (vertices, edges, faces)
¡¡draw pretty pictures!!
open/save/print your favorite configurations
for menu options, move the necklace string & beads

for high school & college math teachers:
instead of lecturing on tessellations & symmetry groups
let students play with this app for active learning seminar

for k-12 math teachers:
even young kids can (intuitively) understand symmetry groups
print bare outline pictures (edges only) for students to color by hand

elizabeth r chen, PhD
mathe·magician