Math: Geometry: What's New, Recent Additions, College, High School, Kids - Page 72

Tangential or Circumscribed Quadrilateral
 

Six Tangential or Circumscribed Quadrilaterals Theorem.

Tangential or Circumscribed Quadrilateral: Pitot Theorem.

Proposed Problem 325.
Isosceles triangle, Altitude, Cevian, Incircle, Excircle.

Proposed Problem 324.
Quadrilateral with perpendicular diagonals, Concurrence.

Altitude Index.
Theorems and Problems.

Proposed Problem 323.
Triangle, Incenter, Circumcenter, Equal circles, Collinearity.

Proposed Problem 322.
Square, Inscribed circle, Tangent, Triangle area.

Proposed Problem 321.
Triangle, Incenter, Excircle, Midpoint of the Altitude, Collinearity.

Proposed Problem 320.
Triangle, Circumcircle, Incenter, Excenter, Collinear points.

Proposed Problem 319.
Triangle, Altitudes, Perpendiculars, Collinear points.

Proposed Problem 318.
A Scalene triangle, Altitudes, Collinear points.

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