1. What is common in the four
figures
2. What makes figures 3 and
4 different from figures 1
and 27
figure
3. Which among the four
figures show
perpendicularity?
4. When are lines said to be
perpendicular to each
other?​

1 What is common in the fourfigures2 What makes figures 3 and4 different from figures 1and 27figure3 Which among the fourfigures showperpendicularity4 When are class=