Question

the three angles of triangles are x, x and 2x prove that the triangle is right angled​

Answer 1

Question:

The three angles of triangles are x, x and 2x prove that the triangle is right angled.

Answer:

For the triangle to be a right angled triangle, one of the angle must be 90° measure.

And we know that, sum of all angles of a triangle equals 180°

So, x+x+2x=180°

4x= 180°

x= 180/4 = 45°

Hence,the angles are 45°,45° and 2 x 45 = 90°

So, here we got an angle of 90°, therefore, the triangle is a right angled triangle.