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Proving a Triangle is Acute, Right or Obtuse
Author:
Chris F Hansen
,
Keith Hatfield
Using Pythagorean's Theorem to Find out if triangles are acute, obtuse, or right
GeoGebra
New Resources
Parallel Lines and Angles: Thinking Classroom Exploration
Angle Bisector: Quick Warm Up Questions
Untitled
Export grapfics view
Perimeter of a Rectangle with Unknown Sides
Discover Resources
Task 1
Skills check: Sine & Cosine Rules
Grecia: triángulos semejantes (cuestiones).
Lahti
Sector5
Discover Topics
General Quadrilateral
Symmetry
Upper and Lower Sum or Riemann Sum
Dilation
Tangent Function