A triangle has sides 12cm, 9cm and 15cm. Is the triangle right-angled? Justify your answer

Step-by-step explanation:

To determine which side is the hypotenuse, the hypotenuse is the longest side. So, the type of triangle with sides 15 cm, 12 cm, and 9 cm is a right triangle.

yes

Step-by-step explanation:

Yes this triangle is right angled and can be justified using the Pythagorean theorem. The theorem states that: . Substitute using the given values:

(9^2)+(12^2)=15^2

81 + 144 = 255

255 = 255.

It satisfies the theorem therefore it is a right angle triangle.

what is

step-by-step explanation: