Geometry · Right triangle · Similar triangles · Distance from point to line · Pythagorean theorem

Problem 3, 2006

← Prev · 27 / 208 · Next →

CityOpen answer

In the right triangle \(ABC\) the right angle is at \(C\), and \(|AC| = 4\), \(|BC| = 8\). A point \(D\) is taken on the side \(BC\) so that \(|CD| = 5\). How far is \(D\) from the side \(AB\)?

A B C D 4 5 8
The distance asked for is measured perpendicularly to \(AB\).

Sign in to check answers, open hints, read the full solution, and track your progress. Statements are always free.

Slovenian High School Mathematics Competition for Vega Awards (MaSSA), izbirno (selection) round 2006, 1. letnik, category A, problem 3. Organized by DMFA Slovenije (Society of Mathematicians, Physicists and Astronomers of Slovenia). Source