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van Aubel's Theorem: Quadrilateral with Squares, Congruence, 90 Degrees using TracenPoche.

Given an arbitrary planar quadrilateral UTAH, place a square outwardly on each side, and connect the centers of opposite squares: M, O, N, and Y. Then van Aubel's theorem states that the two lines MO and NY are of equal length and cross at a right angle.

 

Typography Art in Motion using Mobile Apps, iPad

Click on the figure below.

 

van Aubel's Theorem: Quadrilateral with Squares, Congruence, 90 Degrees for Tablets, iPad, Nexus, Galaxy
  See also: Interactive step-by-step animation using GeoGebra

Home | SearchGeometry | Problems | van Aubel Theorems | Geometry Problem 1226 | Quadrilaterals | Square | iPad | Email | Comment | by Antonio Gutierrez