Theorem 6.8 : If a side of a triangle is produced, then the exterior angle so formed is equal to the sum of the two interior opposite angles.
Text Solution
AI Generated Solution
To prove Theorem 6.8, which states that if a side of a triangle is produced, then the exterior angle formed is equal to the sum of the two interior opposite angles, we can follow these steps:
### Step-by-Step Solution:
1. **Draw Triangle and Extend a Side**:
- Let triangle ABC be given, and extend side BC to a point D.
- This creates an exterior angle ∠ACD.
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