If a liquid does not wet glass, its angle of contact is

Explanation

To determine the angle of contact when a liquid does not wet glass, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Wetting**:
- Wetting occurs when a liquid spreads on a solid surface. If a liquid wets a surface, the angle of contact (or contact angle) is less than 90 degrees. Conversely, if a liquid does not wet the surface, the angle of contact is greater than 90 degrees.

2. **Identify the Condition for Non-Wetting**:
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