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GeoGebra
GeoGebra Classroom
Outline
Introduction to Geometry
Planes and Lines
Angles
Parallel Lines
Triangles
Constructions
Introduction to Geometry
Author:
Curt Painter
,
GreenMaths
,
pchou
Topic:
Geometry
Simple applets useful for introducing Geometry to first year students.
Table of Contents
Planes and Lines
Planes, lines etc
Planes, lines etc completed
Angles
Angles as rotations
Straight angles and full circle angles.
Angle Size and Arm Length
Measuring with a protractor
Vertically Opposite Angles 2
To Show That Vertically Opposite Angles Are Equal
Parallel Lines
Showing Alternate Angles
Showing Corresponding Angles
Showing the Sum of Interior Angles
Parallel Lines and Alternate and Corresponding Angles
Non-Parallel Lines and Alternate and Corresponding Angles
More Exercises with Parallel Lines
Triangles
The sum of the angles in a triangle?
Sum of the angles in a triangle
Triangle Exterior Angle Sum Theorem
Isosceles Triangles
Constructions
Construction - Divide a line segment into equal parts
Next
Planes, lines etc
New Resources
What if the Exponent is an OUTPUT?
Periodic Functions
Droste effect
Oriented Angles and the Unit Circle
Divisible Polynomials - Remainder and Factor Theorems
Discover Resources
cube-hexagone
Two People Looking in a Plane Mirror
Sin, Cos (and Tan) from Triangle in Unit Circle v4
EM 2013 P2 Q6b
Domo3
Discover Topics
Rectangle
Parametric Curves
Cuboid
Mathematics
Square