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Geometry Recent Additions (Page 2 of 20)
Above, left: Alpamayo, almost perfect pyramid of ice, is one of the most
conspicuous peaks in the Cordillera Blanca mountain range of the Peruvian
Andes. Right: Butterfly theorem.
Welcome! Geometry Step-by-Step from the Land
of the Incas provides an eclectic mix of sound, science, and
Incan history in order to raise students' interest in Euclidean geometry.
Visitors will find geometry problems, proofs, quizzes, puzzles,
quotations, visual displays, "scientific
speculation", Cuzco, Machu Picchu, Lost City of the Incas, Nazca Lines, the Quipu, the Lord of Sipan, Caral: the oldest civilization in the Americas, and more.
Site created and maintained by Antonio Gutierrez.
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Requires:
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Recent
Additions (Page 2 of 20)
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770. |
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Proposed Problem
178. Quadrilateral, Trisection of sides, Area.
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769. |
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Proposed Problem
177. Parallelogram with Midpoints,
Triangles, Areas. |
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768. |
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Proposed Problem
176. Quadrilateral with Midpoints,
Triangles, Areas.
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767. |
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Proposed Problem
175. Quadrilateral with Midpoints, Areas.
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766. |
 |
The Persistence of Memory (1931), Salvador Dali.
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765. |
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Proposed Problem
174. Quadrilateral with Midpoints, Triangles, Areas.
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764. |
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Proposed Problem
173. Quadrilateral with Midpoints, Triangles, Areas.
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763. |
 |
Proposed Problem
172. Trapezoid, Midpoints, Quadrilaterals, Areas.
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762. |
 |
Proposed Problem
171. Trapezoid, Midpoints, Triangles, Areas.
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761. |
 |
Proposed Problem
170. Trapezoid, Midpoint, Triangle, Area.
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760. |
 |
Proposed Problem
169. Parallelogram, Interior and Exterior Points, Diagonals, Pentagon, Triangles, Areas
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759. |
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Proposed Problem
168. Parallelogram, Diagonal, Triangles,
Pentagon, Areas.
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758. |
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Proposed Problem
167. Parallelogram, Diagonal, Triangles, Areas.
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757. |
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Proposed Problem
166. Parallelogram, Diagonal, Triangles, Areas.
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756. |
 |
Proposed Problem
165. Parallelogram, Diagonal, Triangles, Areas.
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755. |
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Proposed Problem
164. Parallelogram, Trapezoid, Diagonal, Triangles, Areas.
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754. |
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Proposed Problem
163. Trapezoid, Diagonals, Triangles, Areas.
Trapezoid Index |
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753. |
 |
Proposed Problem
162. Parallelogram, Triangles, Areas.
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752. |
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English Talent: Connie Talbot
Britain's Singing Sensation Connie Talbot Comes to America. |
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751. |
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America's Best Colleges 2009, Ranking, Interactive Mind Map
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750. |
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Peruvian Cuisine (Cocina Peruana): Aventura del Chicharron 1,
2
by Gaston Acurio. |
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749. |
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Peruvian
Cuisine: Aventura del Ceviche, Cebiche 1,
2
by Gaston Acurio. |
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748. |
 |
Peruvian Cuisine (Cocina Peruana):
Ocopa Arequipena 1,
2,
3
by Gaston Acurio.
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747. |
 |
Peruvian
Cuisine: Arroz Chaufa, Chaufa Rice 1,
2
by Gaston Acurio. |
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746. |
 |
Peruvian Cuisine:
Inca Heritage Index
Thanks to its pre-Inca and Inca heritage and to Spanish, Basque, African,
Sino-Cantonese, Japanese and finally Italian, French and British immigration,
Peruvian cuisine combines the flavors of four continents |
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745. |
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Proposed Problem
161. Parallelogram, Midpoints, Octagon, Areas.
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744. |
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Tropical Storm Fay.
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743. |
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Michael Phelps and the Golden Rectangle.
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742. |
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Usain Bolt and the Golden Rectangle.
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741. |
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Proposed Problem
160. Triangle, Incircle, Incenter, Circumcircle, Circumcenter, Inradius. |
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740. |
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Proposed Problem
159. Distances from the Circumcenter to the Incenter and the Excenters. |
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739. |
 |
Proposed Problem
158. Relation between the Circumradius, Inradius and Exradii of a triangle. |
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738. |
 |
Areas Index. |
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737. |
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Congruence.
Index.
|
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736. |
 |
Similarity, Ratios, Proportions.
Index.
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735. |
 |
The Grand Canyon and the Golden Rectangle
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734. |
 |
Statue
of Liberty and the Golden Rectangle.
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733. |
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Angkor Wat and the Golden Rectangle.
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732. |
 |
The Alhambra and the Golden Rectangle.
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731. |
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Neuschwanstein
Castle and the Golden Rectangle.
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730. |
 |
Red
Square, Moscow and the Golden Rectangle.
|
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729. |
 |
The
Eiffel Tower and the Golden Rectangle.
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728. |
 |
Proposed Problem
157. Distance from the Circumcenter to the Excenter. |
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727. |
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Proposed Problem
156. Triangle, Circumradius, Exradius, Chord, Secant line. |
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726. |
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Proposed Problem
155. Euler's Theorem: Distance from the Incenter to the Circumcenter. |
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725. |
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Proposed Problem
154. Triangle, Inradius, Circumradius, Chord. |
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724. |
 |
The
Hanging Gardens of Babylon and
the
Golden Rectangles.
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723. |
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The Amazon River and the Golden Rectangle
Mouth of the Amazon River in Brazil, Satellite image.
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722. |
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The Galapagos Islands and the Golden Rectangle
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721. |
 |
Serengeti
Migration and the Golden Rectangle
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720. |
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Giza Pyramids and the Golden Rectangle.
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719. |
 |
The
Acropolis of Athens and the Golden Rectangle
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718. |
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Machu Picchu 26 slides.
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717. |
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Machu Picchu Slideshow 17 slides.
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716. |
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Great Wall of China and
the
Golden Rectangle.
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715. |
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Proposed Problem
153. Circumscribed Quadrilateral, Diagonals Concurrent with Chords.
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714. |
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Proposed Problem 152. Circumscribed Quadrilateral, Diagonal, Chord, Proportion.
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713. |
 |
Proposed Problem
151. Quadrilateral, Area, Trisection of Sides.
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712. |
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Golden
Rectangle Index.
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711. |
 |
Machu Picchu and
the
Golden Rectangle.
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710. |
 |
Chichen Itza and the Golden Rectangle.
|
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709. |
 |
Christ the Redeemer and
the
Golden Rectangle. |
|
708. |
 |
Colosseum and
the
Golden Rectangle. |
|
707. |
 |
Petra and
the
Golden Rectangle.
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706. |
 |
Proposed Problem
150. Quadrilateral, Area, Trisection of Sides.
|
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705. |
 |
Proposed Problem
149. Quadrilateral, Area, Midpoints.
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704. |
 |
Proposed Problem
148. Quadrilateral, Area, Midpoints.
|
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703. |
 |
Proposed Problem
147. Quadrilateral, Area, Midpoints, Triangle.
|
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702. |
 |
Proposed Problem
146. Varignon's Theorem: Quadrilateral, Midpoints, Parallelogram, Area, Perimeter. |
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701. |
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The Geometry of Seeing. Perspective and Dawn of Virtual Space. Getty
Research Institute.
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700. |
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Cuzco and Machu Picchu Condor's Eye View.
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699. |
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Alturas de Machu Picchu by Los Jaivas.
|
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698. |
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Machu Picchu
Interactive Mind Map
|
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697. |
 |
Kalicanto: Andean Music
Lamento de Zamponas,
Extranandote,
Hasta
que muera el dia,
Doce de la noche
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696. |
 |
Proposed Problem
145.
Four Triangles, Incircle, Tangent and Parallel to Side, Incenters, Circumcenters. |
|
695. |
 |
Proposed Problem
144. Four Triangles, Incircle, Tangent and Parallel to Side, Inradii. |
|
694. |
 |
Proposed Problem
143. Four Triangles, Incircle, Tangent and Parallel to Side, Circumradii. |
|
693. |
 |
Proposed Problem
142. Four Triangles, Incircle, Tangent and Parallel to Side, Areas. |
|
692. |
 |
Proposed Problem
141. Triangle, Incircle, Tangent
, Parallel, Perimeters. |
|
691. |
 |
Proposed Problem
140. Triangle, Excircle, Tangent, Semiperimeter. |
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