Question

a) The sides of a triangle are 15 cm, 25 cm and 20 cm. Show that the triangle is a right
angled triangle?​

Answer 1

Step-by-step explanation:

If these length are in pythagorean triplet then it is a right angled triangle.

so lets check

25square=225+400

625=625

So it is a pythagorean triplet and it is thus a right angled triangle.

Answer 2

Answer:

the right angle triangle is defined by

square on the hypothesis is equal to the sum of the square on the other two sides

${15}^{2} + {20}^{2} = {25}^{2} \\ 225 + 400 = 625$

hence it is a right angle triangle