Question

In the adjoining figure AE || CD and BC || ED, then find y:

• A. ${60}^{\circ }$
• B. ${80}^{\circ }$
• C. ${90}^{\circ }$
• D. ${75}^{\circ }$

Answer 1

The correct option is B ${80}^{\circ }$

$\angle ABP=\angle CDR={100}^{\circ }$
$y={80}^{\circ }$ $(\because \angle CDR+\angle CDS={180}^{\circ })$