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Non-obvious Geometrical Properties of a Triangle
Author:
Gabriel Chacón
Euler's line. Feuerbach's Circle found by Poncelet & J.C. Brianchon (1785-1864)
GeoGebra
New Resources
Roman Numerals Bingo
Shade a spheric triangle with "surface".
Chaotic behaviour
aperiodic monotile construction_step by step
Cube of a Binomial - Volume Model
Discover Resources
Forum_35947_A_InputBoxWithout
Conic Sections - General Form
Assessment Tool- Geo Test (by Sarka, Tomas, 2011-2015)
pointsOfList
Centre of a circle through two points.
Discover Topics
Unit Circle
Trigonometry
Angles
Variance
Percentages