Thales' theorem
LocusEquation[a⊥b,C] asks GeoGebra where to put point C to ensure that the triangle is right at C. Thales' theorem states that if (and only if) C is a point of the circumcircle of the diameter AB, then the triangle is right.LocusEquation[a⊥b,C] asks GeoGebra where to put point C to ensure that the triangle is right at C. Thales' theorem states that if (and only if) C is a point of the circumcircle of the diameter AB, then the triangle is right.