Geometry from the Land of the Incas 77/80

Geometry, Machu Picchu

 

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Recent Additions (Page 77 of 80)

 

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Archimedes' Book of Lemmas. Exercise your brain. Archimedes wrote the "Book of Lemmas" more than 2200 years ago. Solve these 15 high school level problems and lift up your geometry skills.

 

The Quipu: Caral, Ancient Peru city reveals 5,000-year-old 'writing'.
Puruchuco: Knotty Incan Accounting Untangled.

 

 

Experiencing Geometry Poem. Taken from "Experiencing Geometry on Plane and Sphere," a classic textbook on Euclidean and non-Euclidean space. Used by permission of the author David W. Henderson.

 

The Nazca Lines are over 300 drawings on the ground (lines, triangles, trapezoids, spirals, birds, a spider, a monkey, flowers) located in the Nazca desert.

 

Nazca Lines: The Monkey - Puzzle.
 

 

Nazca Lines: The Condor bird. Puzzle: 40 pieces of birds tessellation.

 

Nazca Lines: The Spider. Puzzle: 44 pieces in a tri-dove style of piece.

 

 

Geometry Quotes Quiz. Who said this? Five random questions.

 

Nagel Point Theorem. Proof.
 

 

Puzzle of the Nagel Point: 22 pieces of polygons.

 

Nagel Point Theorem - Flowchart Proof .
 

 

Semiperimeter and excircles of a triangle.

 

 

Semiperimeter and incircle of a triangle.

 

Semiperimeter, incircle and excircles of a triangle.

 

 

Gergonne Point Theorem

Gergonne Point Theorem. Concurrency. Interactive proof with animation.

Key concept: Ceva's Theorem.
 

 

Ceva's theorem

Ceva's Theorem. Concurrency. Interactive proof with animation. Key concept: Menelaus Theorem.

 

Puzzle of the Ceva's Theorem: 48 classic piece.

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