Thales' Theorem
Learn what Thales’ Theorem is and how it helps you find missing angles on a circle quickly. Let’s get started! 🚀
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🛎️ Thales’ Theorem: What It Says
- If one side of a triangle is the diameter of a circle, the opposite angle is 90°.
- This angle is always a right angle, wherever the point is on the circle.
🛎️ Thales’ Theorem: How to Use It
- First, find the diameter of the circle.
- Then mark the angle opposite the diameter on the circle as 90°.
🛎️ Thales’ Theorem: Finding Other Angles
- All angles in a triangle add up to 180°.
- Subtract 90° and the given angle to find the missing angle.
Practice Questions
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Interactive Activity
Explore how right angles form on a semicircle
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