Question

what is m∠1? m∠1=□°

Explanation:

Step1: Find the third angle of the triangle

The sum of the interior angles of a triangle is \(180^\circ\). Given two angles are \(68^\circ\) and \(60^\circ\), let the third angle be \(x\). Then \(x = 180^\circ - 68^\circ - 60^\circ\)
\(x = 52^\circ\)

Step2: Find \(m\angle1\)

\(\angle1\) and the third angle of the triangle are supplementary (they form a linear pair), so \(m\angle1 = 180^\circ - 52^\circ\)
\(m\angle1 = 128^\circ\)

Answer:

\(128\)