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Cut-The-Knot Action (4)!
作者:
Tim Brzezinski
主题:
正方形
Creation of this applet was inspired by a
tweet
from
Alexander Bogomolny
(
cut-the-knot.org)
.
How can you formally prove what this applet informally illustrates?
GeoGebra
Quick (Silent) Demo
新资源
Ellipse, Hyperbola and Circle as Envelopes
Rotating Points (Optical Illusion)
Teorema Japonês para quadriláteros inscritos em uma circunferência
Linear Cross Section Exercise
Slope of a Straight Line: Run and Rise
发现资源
pente_forum
sumangle
Calculus Dog--Run or Swim?
lwfss_s2_trigo
Tessellations Project #1
发现主题
体积
统计特征
等腰三角形
线性方程
直方图