Geometry Problem 800: de Gua's Theorem, Pythagorean theorem in 3-D, Tetrahedron, Cubic Vertex, Triangular Pyramid, Apex, Height, Right Triangle Area, Base Area, Projected Area. Mobil Apps, iPad, Ligh Pattern. Level: High School, SAT Prep, College, Mathematics Education.

In any tetrahedron with a cubic vertex O-ABC the square of the area of the face opposite the cubic vertex O-ABC is equal to the sum of the squares of the areas of the other three faces AOB, AOC, BOC.
 
 

Gua's theorem, Pythagoras theorem in 3-D
 


 

Art of Geometry Problem 800 using Mobile Apps. Light Patterns.

Art of problem 800 using mobile apps, Mobile Apps, iPad, Ligh Pattern
 

Art of Geometry Problem 800 in Motion. Light patterns

Click the figure below to play.

 


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