Geometry · Ruler and compass construction · Thales circle · Inscribed angles · Brocard point

Problem 3, 2022

← Prev · 147 / 185 · Next →

RegionalProof

Let \(ABC\) be a right triangle. Construct a point \(N\) inside \(\triangle ABC\) for which

\[ \angle NBC = \angle NCA = \angle NAB. \]
A B C N φ φ φ
The three marked angles must be equal. The point \(N\) is what has to be constructed.

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

Serbian Regional Competition (Okruzno takmicenje) 2022, high school grade I, category A, problem 3. Organized by the Mathematical Society of Serbia (DMS). Source