length of projection, isosceles, circle (V Soros Olympiad 1998-99 Round 1 10.4)
Source:
May 25, 2024
geometry
Problem Statement
A straight line tangent to a circle circumscribed about an isosceles triangle () at point intersects straight line at point , is the midpoint of (fig.). What is the projection of onto if ?
https://cdn.artofproblemsolving.com/attachments/e/3/59c67e8f5eb3d399656d86613bc699c8baf1c1.png