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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
Math Art Construction
Graph of y = a(x − h)² + k
Quiz: Vertical Angles and Linear Pairs
Drunk Parabola
Graph of y = ax² + bx + c
Discover Resources
perpendicular from center of a circle to chord bisects chord
ปุ่ม start stop
Rotations
Question 3 for Chapter 10
Experimenting with changing the parameters for a quadratic
Discover Topics
Vectors 2D (Two-Dimensional)
Logarithmic Functions
Subtraction
Sequences and Series
Logic