Question

Conclude whether POQ in each of the given figure is a straight line

Answer 1

Step-by-step explanation:

∠ROS+90

∘

=∠QOS⟹90

∘

=∠QOS−∠ROS

∠QOS+∠POS=180

∘

=2(90

∘

)

∠QOS+∠POS=2∠QOS−2∠ROS

⟹2∠ROS=∠QOS−∠POS

⟹∠ROS=

2

1

(∠QOS−∠POS)