Internal angle sum of triangles

Author:mrsK

- Drag the vertices A, B, C to create different types of triangles. - Use the sliders to create copies of the same triangle and prove that the internal angles always add up to 180 degrees.

New Resources

bewijs stelling van Pythagoras
Parallelogram Anatomy
Area of a Circle Illustrated
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
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testo
construction
Square Roots to One d.p.
puzzel
Medial Triangle
Modul 8_Rosiman_SMPN 1 Purwanegara

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Quadrilaterals
Random Experiments
Vectors
Mode
Similar Triangles