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Supplementary angles
Author:
Elizabeth Raskin
,
Yoong Kheong
Complementary and supplementary angles
GeoGebra
What do you notice? What is always, sometimes or never true about the angles?
New Resources
Linear Cross Section Exercise
Rotating Points (Optical Illusion)
Piano. Keyboard.
A retro cityscape with mathematics
Isosceles Triangle: Quick Construction
Discover Resources
Linear Programming
Example 4
Josephus Problem
對數函數2
Understanding the Slope
Discover Topics
Matrices
Difference and Slope
Histogram
Cuboid
Confidence Interval