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If each angle of a triangle …

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If each angle of a triangle is greater than the sum of the other two show that the trangle is obtuse angled

Posted by Dilip Kumar 5 years, 5 months ago

CBSE > Class 09 > Mathematics

2 answers

Gaurav Seth 5 years, 5 months ago

let x,y,z be the angle of a triangle

now, if x+y+z=180

if x=90,theny+z=90,x=y+z

then it is right angle triangle

if x>y+z

then x must be greater than90

otherwise either x is 90 or less than90

so it is a abtuse angle triangle

Tejas Agrawal 5 years, 5 months ago

Don't know

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