What is an obtuse triangle? Definition and examples


An obtuse triangle is a triangle that has one obtuse angle (an angle bigger than 90 degrees)

Obtuse triangle

Things to notice about an obtuse triangle


  • An obtuse triangle has 1 obtuse angle and two acute angles
  • The longest side is the side opposite the obtuse angle 
  • There can only be one obtuse angle in an obtuse triangle

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Math words beginning with the letter o

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