MathNet 2026 — Part 02 Question 74

Be $ABC$ an isosceles triangle with $AB = AC$ e $\widehat{A} = 30^{\circ}$. Be $D$ The midpoint of the base $BC$. On $AD$ e $AB$ take two stitches $P$ e $Q$, respectively, such that $PB = PQ$. Determine the measure of the angle $PQC$.