is the triangle right angled triangle

the third side would be greater than the sum of 40 and 50 i.e 90.

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is the triangle right angled triangle

the third side would be greater than the sum of 40 and 50 i.e 90.

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then according to the question

40 + 50 + x = 180 (sum of 3 sides of triangle is 180)

90 + x = 180

x = 180 - 90

x = 90

so the third side is 90

if u want to check whether this is correct

40 + 50 + 90 = 180