Question

which operations are shown in the equation?
now solve the equation for ( mangle 4+mangle 5+mangle 6 ).
( mangle 4+mangle 5+mangle 6=)

Explanation:

Step1: Recall triangle angle sum

The sum of interior angles of a triangle is \(180^\circ\). Angles \(\angle4\), \(\angle5\), \(\angle6\) are interior angles of a triangle, so their measures sum to \(180^\circ\).

Step2: Confirm the equation

Given \(m\angle4 + m\angle5 + m\angle6=\), by the triangle angle - sum property, this sum is \(180^\circ\).

Answer:

\(180\)