Thales’ theorem

Let A and B be two points and C a point on the semicircle above them. Then the angle ACB is 90.

Title Thales’ theorem
Canonical name ThalesTheorem
Date of creation 2013-03-22 12:45:24
Last modified on 2013-03-22 12:45:24
Owner mathwizard (128)
Last modified by mathwizard (128)
Numerical id 6
Author mathwizard (128)
Entry type Theorem
Classification msc 51-00
Related topic AngleOfViewOfALineSegment
Related topic ProvingThalesTheoremWithVectors
Related topic AreaOfSphericalCalotteByMeansOfChord