Theorem 6.1 : If two lines intersect each other, then the vertically opposite angles are equal.
Text Solution
AI Generated Solution
To prove Theorem 6.1, which states that if two lines intersect each other, then the vertically opposite angles are equal, we can follow these steps:
### Step-by-Step Solution:
1. **Identify the Intersecting Lines**:
Let the two intersecting lines be \( AB \) and \( CD \). They intersect at point \( O \).
2. **Label the Angles**:
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