Polygonal Numbers. Triangular and Square

Polygonal number is a number represented as dots or pebbles arranged in the shape of a regular polygon. Author: prof. Liudmyla Gryzun, G.S.Scovorodu Kharkiv National Pedagogical University

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Billard V5.2 and V6
Double Rodin Coil Style Torus
Neuberg's Theorem
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End Behavior
Triangle - Dilation
Angle Bisector
function y=x^2
Slope and y-intercept

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対称性
数列と級数
中線
複素数
散布図