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GeoGebra
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1. The sum of the angles in a triangle
Author:
Chilled Scrawl
Move the vertices. What do you notice about the sum?
GeoGebra
New Resources
Parallel or Not? (V2)
Isosceles Triangle: Quick Construction
Angles and Intersecting Lines: Quick Investigation
Introduction
Stairs (Optical Illusion)
Discover Resources
Electromagnetic Waves
Exterior angles of a circle
Vertical Angle Exploration
Circumcenter
AREA OF A PARALLELOGRAM AND TRIANGLE ON THE SAME BASE AND BETWEEN THE SAME PARALLELS
Discover Topics
Diagrams
Continuity
Conic Sections
Prism
Triangles