hmw70 hmw70
  • 11-06-2017
  • Mathematics
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A triangle can contain both a right angle and obtuse angle?

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irspow
irspow irspow
  • 11-06-2017
No.  Since all triangles have angles with a sum of 180°, if one angle is 90°, the sum of the other two angles must be 90°.  An obtuse angle is greater than 90°, so having an obtuse angle in a right triangle is impossible, because it would make the sum of all angles greater than 180°.
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