Question

Which of the following does not form Pythagoras triplet ?

15, 8,17
7,24,25
21,20,28
5,12,13

Answer 1

Answer:

21,20,28

Step-by-step explanation:

(28)² = 784

(21)²= 441

(20)²=. 400

(28)² is not equal to (21)² + (20)²

Answer 2

21, 20, 28 does not form a Pythagoras triplet.

• The Pythagoras theorem can be stated as follows.

In a right-angled triangle, the square of the length of the hypotenuse will be equal to the sum of the squares of the perpendicular and the base.

$(hpy)^{2} = (per)^{2} + (base)^{2}$

• A set of three values of the length of the hypotenuse, perpendicular and base of a right-angled triangle is called a Pythagoras triplet.
• 15, 8, 17 and 7, 24, 25 and 21, 20, 28 form Pythagoras triplets.
• 20, 21, 28 do not form a Pythagoras triplet, 20, 21 and 29 do.