Question

25. In the adjoining figure, show that ABIICD.​

Answer 1

Step-by-step explanation:

if AB||CD,  

   APQ∡=CQF∡  {because they are corresponding angles}

APE∡=50

APQ∡+APE∡=180   {angles on a straight line=180}

APQ∡=130

APQ∡=CQF∡=130

therefore AB||CD.