Inscribed Right Triangle in a Circle - Geometry Diagram #1494769 (License: Personal Use)

This diagram shows a circle centered at point O with a right triangle inscribed such that one side is the diameter and the opposite vertex lies on the circle’s circumference. The triangle’s right angle is formed at the circumference, confirming Thales’ theorem. Radii connect the center to the triangle’s vertices, highlighting symmetry and angular relationships.

Used in geometry education materials, math textbooks, or online tutorials explaining circle theorems, particularly Thales’ theorem; targets students, teachers, and self-learners seeking visual proof of geometric principles.