Question

Which of the followings can be the sides of a right angle triangle?

(A) 10, 15, 20 (B) 7, 12, 15

(C) 5, 10, 15 (D) 15, 20, 25

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Answer 1

Answer:

For a triangle to be a right angle triangle, the square of the largest side is equal to the sum of squares of other two sides. So, 36+6.25=42.25 which means it is a right angle triangle. It will form the right angle between sides 6 cm and 2.5 cm.

Answer 2

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(A) 10, 15, 20 = 10 + 15 = 20 ✘

So, No it is Not a Right Triangle.

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(B) 7, 12, 15 = 7 + 12 = 15✘

So, No, it is Not a Right Triangle.

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(C) 5, 10, 15 = 5 + 10 = 15 ✔

It is a Right Triangle

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(D) 15, 20, 25 = 15 + 20 = 25✘

So, it is Not a Right Triangle.

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