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NinePointCircle
Author:
Jeremy Lyle
GeoGebra
This is the nine-point circle
New Resources
Variation Theory Parallelogram Proofs
Explore the invariant lines of matrix {{-2,5},{6,-9}}
alg2_05_05_04_applet_exp_fxn_flvs
Exploring the Derivative of a Quadratic Function
Parallelograms: Quick Investigation
Discover Resources
superposPoly
anglebisectorprob
Exterior Angle of a Triangle
Reflection over any line
x^x, x!
Discover Topics
Secant Line or Secant
Polynomial Functions
Similarity Transformation or Similarity
Ellipse
Parabola