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Midline Theorem
Author:
Ted Courant
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GeoGebra
A triangle becomes a parallelogram, whose opposite sides are congruent. Interpret this fact in terms of the original triangle.
New Resources
Ellipse as Envelope - Correspondence Method
Ellipse, Hyperbola and Circle as Envelopes
History of Maths - Work in progress
Play C3 E3 G3 C4_C4
Limaçon / Cardioid as a Locus - A Classical Construction
Discover Resources
transformation of functions
Centers of Triangles
Voronoi Diagram of 4 points
Hurt-bey_B1_Translations
การลบจำนวนเต็ม
Discover Topics
Upper and Lower Sum or Riemann Sum
Perimeter
Random Variables
General Quadrilateral
Histogram