PQR is an equilateral triangle. Find $\angle w$. Answer: ___ $^\circ$

1. Identify the interior angle of the equilateral triangle at R

Since $PQR$ is an equilateral triangle, $\angle PRQ = 60^\circ$.

2. Calculate the reflex angle $w$ using angles at a point

The angles around point $R$ sum to $360^\circ$.
$w = 360^\circ - 60^\circ - 110^\circ = 190^\circ$