Geometry from the Land of the Incas 18/80

Geometry, Machu Picchu

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Recent Additions (Page 18 of 80)


Right triangle, Incircles

Geometry Problem 668.
Right triangle, Incircles, Parallel, Common Tangent, Mind Map.

Intersecting circles, Tangent, Metric Relations

Geometry Problem 667.
Intersecting Circles, Secant, Tangent, Metric Relations, Mind Map.

Intersecting circles

Geometry Problem 666.
Intersecting Circles, Secant, Tangent, Concyclic points, Mind Map.

Intersecting circles

Geometry Problem 665.
Intersecting Circles, Secant, Tangent, Angles, Mind Map.

Altitude of a triangle

Altitude Index.
Theorems and Problems.

Triangle, 60 Degrees, Centers, Angles

Geometry Problem 664.
Triangle, 60 Degrees, Orthocenter, Incenter, Circumcenter, Angles, Triangle centers.

Triangle, 60 Degrees, Concurrent lines

Geometry Problem 663.
Scalene Triangle, 60 Degrees, Altitude, Angle Bisector, Perpendicular Bisector, Concurrent lines.

Solucion de problemas en video

Video solution: Problems 1-6 (Spanish version)
By Eder Contreras and Cristian Baeza, Chile.

Triangle Centers, Angles

Geometry Problem 662.
Triangle, Incenter, Circumcenter, Orthocenter, Circle, Angle, Measurement.

Intersecting Circles

Geometry Problem 661.
Intersecting Circles, Centers, Secant, Parallelogram.

Triangle, Circle, Diameter, Perpendicular

Geometry Problem 660.
Triangle, Circle, Diameter, Perpendicular Lines.

Formal Sciences Mind Map

Formal sciences Mind Map.

Parallelogram, Parallel lines, Collinear points

Geometry Problem 659.
Parallelogram, Parallel Lines, Collinear Points.

Triangle, Altitudes, Circles, Angles

Geometry Problem 658.
Triangle, Altitudes, Diameter, Circle, Angles.

Geometry in Detroit, Michigan, Slideshow

Geometry in the Real World, Detroit, Michigan - Slideshow.

Triangle, Incircle, Parallel

Geometry Problem 657.
Triangle, Incircle, Tangency Points, Parallel Lines, Congruence.

Geometry Definitions


Semicircle definition

Semicircle Definition.

Tangent line to circle definition

Tangent Definition.

Online education degree: online geometry classes

Semicircle. Index.
Theorems and Problems. 

Circle definition and illustration

Circle definition.

Triangle, Cevian, Concurrent Lines

Geometry Problem 656.
Triangle, Cevian, Concurrent Lines.

Brahmagupta Theorem and Problems Index

Brahmagupta Theorem and Problems - Index
Brahmagupta (598–668) was an Indian mathematician and astronomer who discovered a neat formula for the area of a cyclic quadrilateral.

Distance between triangle centers

Distances between Triangle Centers

Madonna of the Goldfinch by Raphael

Madonna of the Goldfinch by Raphael and Golden Rectangles

Semicircle, Perpendicular, Inscribed Circle, Radius

Geometry Problem 635
Semicircle, Diameter, Perpendicular, Inscribed Circle, Radius.

Schiffler Point and Euler Lines

Schiffler Point:
Four Euler Lines with interactive animation and manipulation
Tracenpoche Interactive Geometry Software.

Right triangle, Altitude, Incenter, Area

Geometry Problem 634
Right Triangle, Altitude, Incenters, Areas.

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