🔺 Vertical Angles Theorem Practice
📚 Vertical Angles Theorem
When two lines intersect, vertical angles are always equal.
Vertical angles are the angles opposite each other when two lines cross. In the diagram below, angles 1 & 3 are vertical angles, and angles 2 & 4 are vertical angles.
Interactive Diagram
Practice Problems
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📖 Step-by-Step Tutorial
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💡 Key Points to Remember
- Vertical angles are always equal (∠1 = ∠3 and ∠2 = ∠4)
- Adjacent angles are supplementary (they add up to 180°)
- All four angles together equal 360°