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GeoGebra
Proof = The area of a triangle
Author:
Sinead Kenrick
To prove the area of a triangle is half the base by the perpendicular height
Discover Resources
Wave interference, Fresnel zones
Angle-Side Relations
Aschoff Editable File
Calculus I
probleme-aire
New Resources
Geometry Rotational Symmetry
Triangle ASA
Centres in a Triangle
Investigating Rotations
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