RRB Group D Model Paper 2 with solutions

(3) The two angles are x and 2x.
The third angle will be (180 – 3x).
Now, 3x = (180 – 3x)
⇒ 6x = 180
⇒ x = 30
So, the angles are 30°, 60° and 90°.
Therefore, the triangle is a rightangled triangle.