zoelaryn3853 zoelaryn3853
  • 04-02-2018
  • Mathematics
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The lengths of the sides of a triangle are 10​, 13​, and 19. classify the triangle as​ acute, right, or obtuse.

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tynollette tynollette
  • 04-02-2018
if c²=a²+b², it is a right triangle. 
if c²<a²+b², it is a acute triangle. 
if c²>a²+b², it is a obtuse triangle. 
in this case, 19²=361, 10²+13²=269. 19²>10²+13², so it is an obtuse triangle. 
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