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GeoGebra
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Outline
Euclidean Geometry
Proofs: the basics
Segments, lines and angles
Triangles
Polygons
Areas
Misc.
Euclidean Geometry
Author:
Simona Riva
Topic:
Geometry
Collection of Euclidean Geometry worksheets.
Table of Contents
Proofs: the basics
The (mathematical) logic behind the scenes - Lesson+Exploration+Practice
Counterexamples - Lesson+Exploration
Napoleon's Theorem - Defining Hypotheses and Thesis - Lesson+Exploration
Segments, lines and angles
Relative Positions of Two Lines in the Plane - Lesson+Exploration+Practice
Angles Between Two Lines and a Transversal - Lesson+Exploration+Practice
Triangles
Special Points of Triangles - Lesson+Exploration+Practice
Construction of a triangle, given a side and two angles - Lesson
Pythagorean Theorem - a "proof without words"
Golden Triangle and Spiral - Lesson
Dissections - Haberdasher's puzzle
Polygons
Convex, Concave and Self-Intersecting Polygons - Lesson+Exploration+Practice
Exploring rotational symmetry of regular polygons - Lesson+Exploration+Practice
Rotational symmetry and lines of symmetry of a regular polygon - Lesson+Exploration+Practice
Areas
Triangle Area = (b ∙ h)/2 Why? Visual proof (1)
Triangle Area = (b ∙ h)/2 Why? Visual proof (2)
Pythagoras, semicircles and lunes - Lesson+Exploration
Misc.
Kaleidoscope
Ruotiamo...
Next
The (mathematical) logic behind the scenes - Lesson+Exploration+Practice
New Resources
Introduction
Rose Curve - A Classical Construction
Rotating Points (Optical Illusion)
Angles and Intersecting Lines: Quick Investigation
Witch of Agnesi - A Classical Construction
Discover Resources
Tessellating the plane
Translations, Stretches, Compressions, & Reflections
Week 12 Project
พีระมิด
Irisan Kerucut
Discover Topics
Triangles
Reflection
Subtraction
Bar Chart or Bar Graph
Logic