In a triangle, sides are $7, 24, 25$. Triangle is

In a triangle, sides are $7, 24, 25$. Triangle is
  1. right-angled
  2. acute
  3. obtuse
  4. equilateral

Solution

$7^2 + 24^2 = 49 + 576 = 625 = 25^2$, so right-angled by converse of Pythagoras.

Asked in: MH-SSC-9

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