Ram and Shyam were playing with a ball in the room. They somehow managed to break the window pane. Now, they both peered out of the window (shown in the figure below), and made the following statements:
Ram: The bars in the window make right angle.
Shyam: The bars in the window make acute angle.
Ram is correct, Shyam is incorrect.
From the figure given in the question, we can clearly see that the bars are making an angle of 90° with each other; hence they are making a right angle. You can measure the angle with a protractor and see for yourself that Ram is correct.