Thales' Theorem

🎬 Video Tutorial

  • Thales’s Theorem: A triangle formed by a circle’s diameter and any point on the semicircle is always a right-angled triangle (the angle opposite this diameter is a right angle (90°)).
  • Sum of interior angles in triangles: Remember, the sum of interior angles in any triangle is always $180^\circ$, allowing you to solve for unknown angles by subtraction.
  • Using Thales’s Theorem to solve problems: Knowing that $\angle C = 90^\circ$ simplifies calculations, especially in complex diagrams with multiple triangles.

Membership Required

You must be a member of Math Angel Plus or Math Angel Unlimited to watch this video.

Join Now

Already a member? Log in here

📂 Revision Cards

💬 ChatCat (AI Math Tutor)