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Euclidean geometry is a branch of mathematics that deals
with the study of geometric shapes and their properties. It
is named after the ancient Greek mathematician Euclid, who
wrote a famous textbook called "Elements" around 300 BC that
served as a foundation for the subject.
In Euclidean geometry, the basic objects of study are
points, lines, and planes. These are defined in terms of
their properties, and various axioms and postulates are
assumed to hold true in order to derive theorems and solve
problems.
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School, College
Geometry - Index. |
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HTML5 and Dynamic Geometry |
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Thematic poems can benefit the study of geometry by
increasing engagement and retention, enhancing critical thinking,
promoting aesthetic appreciation, enabling differentiated learning, and
providing cultural connections. |
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Word Cloud: Geometry in Different Living World Languages |
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Geometry Types, Methodologies, Terminologies
Interactive Mind Map and News.
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Geometry History:
Geometers, Index
Interactive Mind Map and News.
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Geometric, Geometrical, and Geometrically Terms.
Interactive Mind Map |
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Definitions. |
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Points, Theorems and Problems - Index. |
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Lines. Theorems and Problems. |
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Angles. Theorems and Problems. |
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Angle Bisector. Theorems and Problems. |
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Acute Angle in the Real World - Slideshow. |
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Obtuse Angle. Theorems and Problems. |
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Angles: 30, 60, 120 degrees. |
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Angles: 45, 135 degrees. |
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Parallel lines. |
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Perpendicular lines. |
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Perpendicular
Bisector. |
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Concurrent lines. |
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Transversal Lines. |
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Collinear Points.
Theorems and Problems |
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Midpoints.
Theorems and Problems |
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Trisecting a Line Segment.
Theorems and Problems |
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Triangles. |
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Equilateral Triangles. |
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Isosceles Triangle. |
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Isosceles Triangle 80-20-80. |
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Right Triangle. |
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Special Right Triangles.
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Special Right Triangle 30-60.
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Metric Relations in a Right Triangle, Theorems and Problems. |
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Obtuse Triangle. |
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Altitude Index.
Theorems and Problems. |
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Median Index.
Theorems and Problems. |
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Semiperimeter, Perimeter Index.
Theorems and Problems. |
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Heron's Formula.
Key facts and a purely geometric step-by-step proof.
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Triangle with Double Angle, Theorems and Problems, Index
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Geometry Online - Table of
Content
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