| Direction: Q. 16 to 20 |
| There is a staircase as shown in figure, connecting points A and B. Measurement of steps are marked in the figure. Give answers of the following questions by looking at the figure. |
 |
A) \[30{}^\circ \]
B) \[60{}^\circ \]
C) \[90{}^\circ \]
D) nothing
Correct Answer: C
Solution :
The common angle in each staircase is \[90{}^\circ \] So, option [c] is correct,
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