Given below are two pairs of statement , combine these two statement using "if and only if"
(i) p : If a polygon is convex then all its diagonal lies inside the polygon
q : If all the diagonals of a polygon lie inside if then it is convex
(ii) p : If a physical quantity has magnitude only then it is scalar
q : If a physical quantity is scalar , then it has magnitude only

Explanation

To combine the given pairs of statements using "if and only if," we will follow a systematic approach for each pair.

### Step-by-Step Solution:

#### Pair (i):
1. **Identify the Statements**:
- Statement p: "If a polygon is convex, then all its diagonals lie inside the polygon."
- Statement q: "If all the diagonals of a polygon lie inside, then it is convex."
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