Question

find if this is right angled triangles​

Answer 1

Answer:

15² is 225

12² is 144

9² is 81

144+81 = 225

thus

15²=12²+9²

thus

triangle ABC is a triangle with Angle A as 90⁰

Answer 2

Answer:

To check if the triangle given above is a right triangle it must fulfill the Pythagorean triplet law .

it means (AB²)+(AC²)=BC²

BUT IN THE ABOVE CONDITION

81+144=225..

AS IT SATISFIES THIS CONDITION THEREFORE WE CAN CALL( 9, 12 ,15) A PYTHAGOREAN TRIPLET AND THEREFORE THIS TRIANGLE FORMS A RIGHT ANGLE TRIANGLE WITH RIGHT ANGLED AT BAC