Geometry Problems 631-640: Triangle, Collinearity, Incenter, Circle, Arbelos

Geometry Problems, Online Education

 

Geometry Problems 631 - 640

Geometry Problems 631-640 

Triangle, Angle Bisectors, Collinear

Geometry Problem 631.
Triangle, Exterior Angle Bisectors, Collinear Points.

Triangle, Angle Bisectors, Midpoint, Collinear

Geometry Problem 632.
Triangle, Interior and Exterior Angle Bisectors, Midpoints, Collinear Points.

Triangle, Parallel Lines, Intersecting Lines

Geometry Problem 633
Triangle, Parallel Lines, Intersecting Lines.

Right triangle, Altitude, Incenter, Area

Geometry Problem 634
Right Triangle, Altitude, Incenters, Areas.
Geometric art of problem 634.
Background: stereographic projection of the Temple of the Three Windows at Machu Picchu

Semicircle, Perpendicular, Inscribed Circle, Radius

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

Semicircle, Perpendicular, Inscribed Circle, Tangent

Geometry Problem 636
Semicircle, Diameter, Perpendicular, Inscribed Circle, Common Tangent.

Semicircle, Perpendicular, Inscribed Circle, Tangent, Chord

Geometry Problem 637
Semicircle, Diameter, Perpendicular, Inscribed Circle, Chord, Tangent, Arbelos.

Arbelos, Circle, Concyclic Points

Geometry Problem 638
Arbelos and Inscribed Circle: Concyclic Points.

Semicircle, Perpendicular, Inscribed Circle, Tangent, Congruence

Geometry Problem 639
Semicircle, Diameter, Perpendicular, Inscribed Circle, Tangent, Arbelos, Congruence.

Archimedes Book of Lemmas Proposition 1

Geometry Problem 640.
Archimedes Book of Lemmas: Proposition 1
Tangent circles and parallel diameters 

Archimedes Book of Lemmas Proposition 1

Etching and Typography of Geometry Problem 640.
Archimedes Book of Lemmas: Proposition 1
Using iPad Apps.

Geometry problems 621-630

Geometry problems 641-650

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