菱形六十面體

Auteur:Ho-Kai Chen

先畫正二十面體, 再由中心點向各面畫出菱形面 ---- In geometry, a rhombic hexecontahedron is a stellation of the rhombic triacontahedron. It is nonconvex with 60 golden rhombic faces with icosahedral symmetry.

Nieuw didactisch materiaal

異分母分數減法
三位數除以一位數（二）
兩組對邊相等的四邊形
Nested spiral octagon
四邊形的特性

Ontdek materiaal

地科模型–日照長短
Difference of Two Cubes
圓冪性質
圈圈移動
Mathematics and Optics (and their applications)

Ontdek onderwerpen

Frequentieverdeling
Prisma
Hyperbool
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