Math: Geometry: What's New, Recent Additions, College, High School, Kids - Page 111

Proposed Problem 111. Orthogonal Circles.

Proposed Problem 110. Area of Contact Triangle.

Proposed Problem 109. Angles, Right Triangle, Cevian.

Nazca Lines and Indiana Jones
See also: Two British archaeologists of the University of Bristol exploring Peruvian mystery.

Inca Skull Surgery
Inca Skull Surgeons Were "Highly Skilled," Study Finds.
Trepanation = square hole in the skull.

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