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Hinging Triangles
Author:
Arthur Lee
Topic:
Triangles
PMC09 Q5
Drag E to make two isosceles triangles.
GeoGebra
New Resources
Proving Triangles Similar: Multistep Transformations
Identify Opposite, Adjacent, Hypotenuse
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Thales' Intercept Theorem
Folding door
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Exploring Properties of Trapezoids
Unit 11 Test (problem #2)
Area Proofs - Chapter 11
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Orthocenter
Standard Deviation
Solids or 3D Shapes
Vectors 3D (Three-Dimensional)
Subtraction