In geometry, Thales's theorem states that if A, B, and C are distinct points on a circle where the line AC is a diameter, the angle ∠ ABC is a right angle. Thales's theorem is a special case of …

Definition of Thales theorem - the diameter of a circle always subtends a right angle to any point on the circle.

The Thales theorem states that: If three points A, B, and C lie on the circumference of a circle, whereby the line AC is the diameter of the circle, then the angle ∠ABC is a right angle (90°).

This theorem can be proved by using two isosceles triangles inscribed in a circle and using their angles. Here, we will look at a more detailed explanation of Thales’ theorem. Also, we will …

What is Thales Theorem? The Thales theorem, which is also referred to as the basic proportionality theorem, states that the line drawn parallel to one side of a triangle and cutting …

Theorem Thales' theorem: If a triangle is inscribed inside a circle, where one side of the triangle is the diameter of the circle, then the angle opposite to that side is a right angle. The converse of …

Thales' Theorem states that any triangle formed with a circle's diameter as one side is always a right-angled triangle. Learn how to apply Thales' Theorem with clear, step-by-step examples.

Jun 9, 2025 · The Interior Angles Theorem is traditionally ascribed to Pythagoras, who lived near Thales, and may have met him. Thus it is possible that Pythagoras learned of the Interior …

In this course we will refer to this figure as a Thales Figure, in honor of the early Greek geometry who allegedly measure the height of the Great Pyramid using shadows.

Illustrated definition of Thales Theorem: An angle inscribed across a circle's diameter is always a right angle. Try it below: