Six Tangential or Circumscribed Quadrilaterals Theorem

Click the figure below to see the complete Six Tangential or Circumscribed Quadrilaterals Theorem.


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Six Tangential or Circumscribed Quadrilaterals Theorem
Level: High School, SAT Prep, College geometry

Bottema's Theorem: Triangle and Squares

Invariance of an isosceles right triangle.
Triangle and Squares with Interactive Geometry Software
Step-by-Step construction, Manipulation, and animation.




Read more at:
gogeometry.com/geometry/bottema_theorem_triangle_square.htm

Bottema's Theorem: Triangle and Squares

Dynamic Geometry Software. Step-by-Step construction, Manipulation, and animation
Draw squares ABDE and BCFG on sides AB and BC of a triangle ABC. Then the midpoint M of EF is independent of B and the triangle AMC is an isosceles right triangle.



Continue reading at:
gogeometry.com/geometry/bottema_theorem_triangle_square.htm