Question

please tell me this solution don't tell useless.​

Answer 1

Answer:

( 1 ) , is the right answer babe.

Step-by-step explanation:

By, using Pythagoras theorem

15² = 12² + 9²

225 = 225, which proves the property of Right angled triangle.

Answer 2

Answer:

IN this you have to plus all three angles of each question and if the ans is 90degree then it is a right angle triangle

Step-by-step explanation:

For example. 9+12+15=36 (it is not a right angle triangle because the sum of all the three angles are not 90degree)