A) Two
B) Three
C) Four
D) Five
E) None of these
Correct Answer: B
Solution :
Explanation: Option (b) is correct. Clearly, \[\angle \text{ABC}\] and \[\angle \text{DCB}\] are right angles but \[\angle \text{BAE, }\angle \text{AED}\] and \[\angle \text{CDE}\] are of more than \[90{}^\circ \] but less than \[180{}^\circ \] (obtuse angles).
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