Escherized Double Rotations

トピック:回転

Choose from 3, 4, 5, or 6-fold rotations. One of those doesn't work in general. Been looking at a lot of quilts lately, is all I can say. (Cf. http://www.stitchedincolor.com/)

新しい教材

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Interactive Unit Circle - Exact Trig Values
Converting Angle Measures Between Degrees and Radians
Dividing a 3-digit number by a 1-digit number (2)
Dividing a 2-digit number by a 1-digit number (2)

教材を発見

Hipèrbola
trigonometry
Voronoi - 8 points
Islamic Art 1
PDST Locus Of Double Branch Hyperbola

トピックを見つける

ベクトル (２次元)
曲線スケッチ
分散
自然数
三角形