Problem 362. Circle, Chord, Perpendicular, Equal chords

Proposed Problem
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Complete Problem 362
Level: High School, SAT Prep, College geometry

Problem 361: Right triangle, Incircle, Incenter, Tangency points, Angle

Proposed Problem
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Complete Problem 361
Level: High School, SAT Prep, College geometry

Rose Window at Church of St Matthias, Richmond and the Golden Rectangle

Golden Rectangle
The main part of the church was built in 1857-8 to the design of Sir George Gilbert Scott, the upper part of the tower and spire being completed in 1861-2.

Key internal features include the great wheel window at the west end of the church, filled with fine stained glass by Wailes and Co of Newcastle-upon-Tyne, depicting the heads of the twelve Apostles with the head of Our Lord at the centre, dating from 1869.

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Rose Window at Church of St Matthias, Richmond

North Rose window at Chartres Cathedral and the Golden Rectangle

Golden Rectangle
The Cathedral of Our Lady of Chartres, is a Roman Catholic cathedral located in Chartres, about 50 miles southwest of Paris, is considered one of the finest examples in all France of the Gothic style of architecture.

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Rose window at Chartres Cathedral

Problem 360. Area of a triangle, Curvilinear triangles, Circles, Diameters.

Proposed Problem
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Complete Problem 360
Level: High School, SAT Prep, College geometry

Problem 359. Cyclic quadrilateral, Angle bisector, Rhombus

Proposed Problem
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Complete Problem 359
Level: High School, SAT Prep, College geometry

Marcahuasi Sunset and the Golden Rectangles

Golden Rectangle
Marcahuasi is a high plateau frequently visited by hikers and campers wanting to see its many unusual rock formations; standing at over 4,000m (13,123 feet) above sea level, its one of Peru’s lesser-known marvels and something of a mystical enigma.

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Marcahuasi Sunset

Construct the circumcircle of a triangle with compass alone

Proposed Problem
Click the figure below to see the complete Mascheroni construction: Construct the circumcircle of a triangle with compass alone.


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Mascheroni construction: Construct the circumcircle of a ABC with compass alone.
Level: High School, SAT Prep, College geometry

Mascheroni construction: Find the center of a circle with compass alone.

Proposed Problem
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Mascheroni construction: Find the center of a circle with compass alone.
Level: High School, SAT Prep, College geometry

Problem 358. Isosceles triangle 80-80-20, Circle, Angles, Congruence

Proposed Problem
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Complete Problem 358
Level: High School, SAT Prep, College geometry

Elementary Algebra Interactive Mind Map

Graphic organizers are visual representations of knowledge, concepts or ideas.
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Elementary Algebra Interactive Mind Map

Algebra Index Interactive Mind Map

Graphic organizers are visual representations of knowledge, concepts or ideas.
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Algebra Index Interactive Mind Map

Amazon.com: Best Magazine Covers of the Year

Customers Who Vote for This Year's Best Magazine Cover Automatically Get a Chance to Win a $10,000 Amazon.com Gift Card.

Graphic organizers are visual representations of knowledge, concepts or ideas.
Click the figure below to see the Interactive Mind Map based on Amazon.com: Best Magazine Covers of the Year.


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Amazon.com: Best Magazine Covers of the Year

Mac OS X Reference Library, Mind Map

Mac OS X is a line of computer operating systems developed, marketed, and sold by Apple Inc. Apple also produces specialized versions of Mac OS X for use on three of its consumer devices: the iPhone OS for the iPhone and iPod Touch, and an unnamed version for the Apple TV.

Graphic organizers are visual representations of knowledge, concepts or ideas.
Click the figure below to see the Interactive Mind Map based on the Mac OS X Reference Library.


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Mac OS X Reference Library, Mind Map

Problem 357. Square, Exterior point, Triangles, Area

Proposed Problem
Click the figure below to see the complete problem 357 about Square, Exterior point, Triangles, Area.


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Complete Problem 357
Level: High School, SAT Prep, College geometry

Problem 356. Square, Interior point, Triangles, Area

Proposed Problem
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Complete Problem 356
Level: High School, SAT Prep, College geometry

Rose window at Strasbourg Cathedral

Golden Rectangle
Strasbourg Cathedral is a Roman Catholic cathedral in Strasbourg, France. Although considerable parts of it are still in Romanesque architecture, it is widely considered to be among the finest examples of high, or late, Gothic architecture.

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Rose window at Strasbourg Cathedral

The Roman Colosseum 3 and the Golden Rectangle

This great amphitheater in the centre of Rome was built to give favors to successful legionnaires and to celebrate the glory of the Roman Empire.

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The Roman Colosseum and the Golden Rectangle

The Roman Colosseum 2 and the Golden Rectangle

This great amphitheater in the centre of Rome was built to give favors to successful legionnaires and to celebrate the glory of the Roman Empire.

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The Roman Colosseum and the Golden Rectangle

The Roman Colosseum 1 and the Golden Rectangle

This great amphitheater in the centre of Rome was built to give favors to successful legionnaires and to celebrate the glory of the Roman Empire.

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The Roman Colosseum and the Golden Rectangle

Mind map Software AG Solutions by Industry

In addition to ADABAS database management system and the Natural application development language, Software AG has extended its focus to the middleware market with products for service-oriented architecture (SOA), business process management (BPM), business integration and application modernization.
Graphic organizers are visual representations of knowledge, concepts or ideas.
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Software AG Solutions by Industry

Problem 355: Circles, Common external tangent, Concyclic points

Proposed Problem
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Complete Problem 355
Level: High School, SAT Prep, College geometry

Math Pre-kindergarten skills, Interactive Mind Map

Pre-kindergarten (also called Pre-K or PK) refers to the first formal academic classroom-based learning environment that a child customarily attends in the United States. It begins around the age of four or five in order to prepare for the more didactic and academically intensive kindergarten.
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Click the figure below to see the Math Pre-kindergarten skills Interactive Mind Map.


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Math Pre-kindergarten skills

Problem 354. Rhombus, Square, 45 degrees

Proposed Problem
Click the figure below to see the complete problem 354 about Rhombus, Square, 45 degrees.


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Complete Problem 354
Level: High School, SAT Prep, College geometry

IBM Solutions for Education Industry

IBM integrates hardware, software, business consulting and IT services into business solutions.
Graphic organizers are visual representations of knowledge, concepts or ideas.
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IBM Solutions for Education Industry

Mind map of IBM Solutions by IT issues

IBM integrates hardware, software, business consulting and IT services into business solutions.
Graphic organizers are visual representations of knowledge, concepts or ideas.
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IBM Solutions by IT issues, Interactive Mind Map

Kaleidoscope based on Paris Review, 1984 by Sol LeWitt

Kaleidoscope
Sol LeWitt (1928 - 2007) was an American artist linked to various movements, including Conceptual art and Minimalism. LeWitt , whose art is rooted in basic geometry, rose to fame in the late 1960s with his wall drawings and "structures".



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Kaleidoscope based on Paris Review, 1984 by Sol LeWitt

Problem 353. Tangential quadrilateral, Diagonals, Incircles, Inradii

Proposed Problem
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Complete Problem 353
Level: High School, SAT Prep, College geometry

Problem 352. Tangential quadrilateral, Incircles, Common tangent, Circumscribable or Tangential quadrilateral

Proposed Problem
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Complete Problem 352
Level: High School, SAT Prep, College geometry

Problem 351: Rhombus, Incircles, Common tangent, Circumscribable or Tangential quadrilateral

Proposed Problem
Click the figure below to see the complete problem 351 about Rhombus, Incircles, Common tangent, Circumscribable or Tangential quadrilateral.


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Complete Problem 351
Level: High School, SAT Prep, College geometry

Fields of Mathematics, Interactive Mind Map

Mathematics can be subdivided into the study of quantity, structure, space, and change.
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Fields of Mathematics

Josef Albers, Homage to the Square: Aurora

Josef Albers (1888 - 1976) was a German-born American artist (geometric abstraction) and educator whose work, both in Europe and in the United States, formed the basis of some of the most influential and far-reaching art education programs of the 20th century.

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Josef Albers Index