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GeoGebra
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Keeping segments parallel while moving
Author:
Alexander Bogomolny
GeoGebra
New Resources
Piano. Keyboard.
Pelecoid
Parallel or Not? (V2)
Construct a Square
van Aubel's Theorem
Discover Resources
Quadratic Angry Birds: Hoehne
Rekenrek for LZ 2
slope-intercept interactive
多邊形的內角和
numeric
Discover Topics
Rational Numbers
Limits
Polygons
Root
Sphere