College Geometry Online, eLearning


Rhombus / Rhombi Theorems and Problems - Index

Rhombus, Rhombuses, Rhombi


Euclid's Elements 23 definitions

Euclid's Elements Book I, 23 Definitions. One-page visual illustration.
Euclid's Elements Book. Index

fractBG Rhombus

Geometric Art: Rhombus. iPad Apps: fractBG.
Fractal Image with Rhombus.

Perpendicular Bisector Index

Perpendicular Bisector.

Geometric Art: Square, Rhombus, Symmetry, Software 

Geometric Art: Square, Rhombus, Symmetry, Software.

Rhombus Word Cloud

Word Cloud and News of the Rhombus.

Isometric for iPadd

iPad Apps: Isometric.
Hexagons, Rhombus 60-120 degrees.

Rhombus Word Cloud

Rhombus Word Cloud. Geometry for Kids.

Isolines illustration: Pentagon

Geometric Art: Isolines, Polygons, Rhombus, Triangle, Octagon, Parallel Lines, Symmetry, Geometry for Kids, Sacred Geometry, Software

Triangles and Squares

Triangle and Squares.

Isolines illustration: Rhombus, Hexagon

Geometric Art: Isolines, Hexagon, Rhombus, Geometry for Kids, Symmetry, Software

Quadrilateral Index 


Parallelograms Index

Parallelograms Index.

Durer's Pentagon and Rhombus

Durer's Pentagons and Rhombuses.
It is easy to see that two regular pentagons together with a 36 rhombus form an octagonal region that can tile the plane.

Equilic Quadrilateral and Rhombus 

Rhombus and Equilic Quadrilateral.

Dynamic Geometry 1470

Dynamic Geometry 1470.
Tangential Quadrilateral, Incircles, Tangent, Parallel, Rhombus, Step-by-step Illustration.

Geometry problem 1219

Geometry Problem 1219
Equilateral Triangles, Midpoints, 60 Degrees, Congruence, Rhombus.

Problem 919

Geometry Problem 919.
Rhombus, Triangle, Perpendicular, 90 Degrees, Congruence.

Triangle, Rhombus, Harmonic Mean, 90 Degrees, Perpendicular

Geometry Problem 749.
Triangle, Rhombus, Parallel, Harmonic Means, Metric Relations.

Rhombus, Circle

Proposed Problem 455.
Rhombus, Inscribed Circle, Angle, Chord, 45 Degrees.

Cyclic quadrilateral, Rhombus

Proposed Problem 359.
Cyclic quadrilateral, Angle bisector, Rhombus.

Rhombus, Square 

Proposed Problem 354.
Rhombus, Square, 45 degrees.

Rhombus, Circumscribable quadrilateral

Proposed Problem 351.
Rhombus, Incircles, Common tangent, Circumscribable or Tangential quadrilateral.

Rhomus problem

Proposed Problem 219. Rhombus, Perpendiculars, Arithmetic Mean.

Rhombus, Square, Angle

Proposed Problem 179. Rhombus, Square, Diagonal, Angle.

Generalizing Van Aubel: Michael de Villiers' Theorems.
Similar rhombuses or rhombi with centers E, F, G and H are constructed externally on the sides of quadrilateral 

Hinged tessellation, Dynamic geometry

Hinged tessellation: Tessellation of squares and rhombuses or rhombi hinged at their vertices.

The Landscape of Geometry Terms.For right brain thinking (random, visual, subjective, emotional, holistic, intuitive,  creative, divergent..) with randomly selected terms, depending on size and location, and zoom.



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Last updated: Apr 16, 2020