Maths / Circles / Cyclic Quadrilateral

QUESTION

 In the figure given above, the measure of $\angle ADC$ is equal to ​​​​​​​

 OPTIONS A. $67\frac {1^o}{2}$ B. $90^o$ C. $270^o$ D. $135^o$
Right Option : D

EXPLANATION
Explain TypeExplanation Content
Text
 $\dpi{120} \fn_jvn \large \angle ABC + \angle ADC= 180^0$$\dpi{120} \fn_jvn \large 3x + x = 180^0$$\dpi{120} \fn_jvn \large 4x = 180^0 \Rightarrow x=45^0$$\dpi{120} \fn_jvn \large \angle ADC= 3x= 3 X 45^0= 135^0$

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