Question

what is $mangle1$?
$mangle1=square^{circ}$

Explanation:

Step1: Apply the exterior angle theorem

The exterior angle theorem states that an exterior angle of a triangle is equal to the sum of the two non - adjacent interior angles.

Step2: Calculate \(m\angle1\)

\(m\angle1=104^{\circ}+41^{\circ}\)
\(m\angle1 = 145^{\circ}\)

Answer:

\(145\)