In figure, POQ is a line. Ray OR is perpendicular to line PQ. OS is another ray lying between rays OP and OR. Prove that

**Solution:**

**Given:** OR is perpendicular to PQ

OR and OS are rays to PQ

**To prove: **

**Proof:** **(Linear pair)**

**R.H.S**

** (Linear pair)**

** (1)**

We have , putting this in **(1),** we get

**R.H.S =**

Therefore, **L.H.S=R.H.S**

**Hence proved.**