Two sides of a triangle have lengths 10 and 15 what must be true about length of the third side

asked Apr 22, 2015 218k views

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x - length of the 3rd side

$10+15>x \wedge 10+x>15 \wedge 15+x>10\\ x<25 \wedge x>5 \wedge x>-5\\ x\in(5,25)$

Ji Yalin answered Apr 27, 2015

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