Question

what is ( mangle qtr )?
( mangle qtr=square^{circ} )

Explanation:

Step1: Recall the total degrees in a circle

A full circle has \(360^{\circ}\).

Step2: Set up the equation

Let \(m\angle QTR = x\). We know that \(110^{\circ}+110^{\circ}+x=360^{\circ}\).

Step3: Solve for \(x\)

First, simplify the left - hand side: \(220^{\circ}+x = 360^{\circ}\). Then, subtract \(220^{\circ}\) from both sides: \(x=360^{\circ}-220^{\circ}\).

Answer:

\(140\)