Question

20.Check whether given sides are the sides of right-angled triangles, using Pythagoras

theorem. 12, 13, 15.​

Answer 1

Answer:

No they are not

Here greatest side is 15 cm so it will be hypotenuse and the other two sides will be 12cm and 13cm

so according to Pythagoras theorem

12² + 13² = 15²

RHS

12² + 13²

144 + 169

313

LHS

15²

225

Here RHS ≠ LHS

So it can't be the sides of a Right angle triangle

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Answer 2

Answer:

Here,

Hypotenuse=15

Perpendicular=13

Base=12

So,according to Pythagoras theorem

(H)^2=(P)^2+(B)^2

(15)^2=(13)^2+(12)^2

225=169+144

225(not=)313

So 12,13,15 are not the sides of right angled triangles