1.

Determine whether the triangle whose lengths of sides are 3 cm, 4 cm,5 cm is a right-angled triangle.

Answer» We know, every right angle follows Pythagoras theoram
lengt`h^2`+breat`h^2`= hypotenus`e^2`
LHS=`3^2+4^2`=9+16=25
RHS=`5^2`=25
LHS=RHS
So, this is a right angled triangle.


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