A) 45°
B) 60°
C) 75°
D) \[95{}^\circ \]
Correct Answer: C
Solution :
Given, \[\angle ABC={{105}^{{}^\circ }}\] \[\angle \]DAB = 120° \[\Rightarrow \] \[\angle \]DCX = 120° \[\Rightarrow \] \[\angle \]DCB = 180° - 120° = 60° Angles of a quadrilateral is equal to 360°. \[\therefore \] \[\angle \]ADC = 360° - [120° + 105° + 60°] \[= 360{}^\circ - 285{}^\circ =[75{}^\circ ]\]You need to login to perform this action.
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