Given: length of sides are 1.5,3.6,3.9Formula Used/Theory:-⇒ Pythagoras theorem:-Base2 + Height2 = Hypotenuse2Largest side is 3.9cmOther 2 sides are 1.5cm,3.6cmAs hypotenuse is largest sideHypotenuse2 = (3.9)2 = 15.21Sum of square of other 2 sides of triangle(3.6)2 + (1.5)2 = 12.96 + 2.25= 15.21LHS = RHSHence Pythagoras theorem verified∴ it is a right angled triangleResult:- Triangle having sides of these lengths is rightangled triangle

Q. 1384.7( 3 Votes )

Check whether the

Class 7th NCERT - Exemplar Mathematics 6. Triangles

Answer :

Given: length of sides are 1.5,3.6,3.9

Formula Used/Theory:-

⇒ Pythagoras theorem:-

Base² + Height² = Hypotenuse²

Largest side is 3.9cm

Other 2 sides are 1.5cm,3.6cm

As hypotenuse is largest side

Hypotenuse² = (3.9)² = 15.21

Sum of square of other 2 sides of triangle

(3.6)² + (1.5)² = 12.96 + 2.25

= 15.21

LHS = RHS

Hence Pythagoras theorem verified

∴ it is a right angled triangle

Result:- Triangle having sides of these lengths is right

angled triangle

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