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Midline Surprise
Author:
Ted Courant
Two 45º-45º-90º triangles are placed side-to-side, as shown, and midpoints of the indicated segments are joined.
GeoGebra
Prove that the resulting quadrilateral is a square.
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Poorly Drawn Parallelograms 2
Parallelograms: Quick Investigation
Discover Resources
Trig identities kent
listexte
Line integral: Work
Copying a Regular triangle
Jibola's Tessellation
Discover Topics
Surface
Rectangle
Conic Sections
Rotation
LCM and GCD