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สามเหลี่ยมพิทากอรัส
Author:
Sompong Koonkor
GeoGebra
New Resources
van Aubel's Theorem
Simplifying Radicals: Geometric Thin Slice
Rotating Points (Optical Illusion)
Angles and Intersecting Lines: Quick Investigation
Play C3 E3 G3 C4_C4
Discover Resources
Parabola: Tangents to the Endpoints of a Focal Chord
River excursion
andreicordon.png
Trial 4 file
Quadratic Formula_1
Discover Topics
Curve Sketching
Continuity
Polygons
Arithmetic Mean
Area