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The angles of a triangle always sum to 180 degrees.
Author:
Andrea Siwik
GeoGebra
New Resources
Reflection Across 2 Parallel Lines
רישום חופשי
Exploring GeoGebra for the First Time
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Equation of Locus - Parabola
Discover Resources
Blackbody Spectrum versus Temperature
Find the least squares line
Pappus' theorem for parallel lines
Copying a angel
Pursuit curves on cube
Discover Topics
Geometric Transformations
Calculus
Derivative
Means
Terms