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Perpetual calendar
Author:
Jean David
GeoGebra
1) Find the principle of the calendar. 2) Explain the red month for leap years.
New Resources
Construcing a 30° Angle and Properties of Rhombi
רישום חופשי
Midpoint & Endpoint Illustrator (V2)
Sticky point to list of points
Untitled
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Euler Segment
Menelaus.
Desargues' theorem for parallel lines
Parade Route
ความน่าจะเป็น
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Linear Equations
Exponential Functions
Set Theory
Quadrilaterals
Pythagoras or Pythagorean Theorem