A) \[{{90}^{{}^\circ }}\]
B) \[{{45}^{{}^\circ }}\]
C) \[{{135}^{{}^\circ }}\]
D) \[{{60}^{{}^\circ }}\]
Correct Answer: A
Solution :
(a): As \[\angle BMN+\angle DNM={{180}^{{}^\circ }}\] \[\angle PMN+\angle PNM={{90}^{{}^\circ }}\] \[\angle MPN={{180}^{{}^\circ }}-(\angle PMN+\angle PNM)\] \[={{180}^{{}^\circ }}-\left( {{90}^{{}^\circ }} \right)\] \[\Rightarrow \]\[\angle MPN={{90}^{{}^\circ }}\]You need to login to perform this action.
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