Question

what is ( mangle 1 )? ( mangle 1 = square^circ )

Explanation:

Step1: Find the third angle of the triangle

The sum of the interior angles of a triangle is \(180^\circ\). So the third angle (let's call it \(x\)) is \(180^\circ - 85^\circ - 49^\circ\).
\(x = 180 - 85 - 49 = 46^\circ\)

Step2: Find \(m\angle1\)

\(\angle1\) and the third angle of the triangle are supplementary (they form a linear pair), so their sum is \(180^\circ\). Thus, \(m\angle1 = 180^\circ - 46^\circ\).
\(m\angle1 = 134^\circ\)

Answer:

\(134\)