Question

two angles are linear pair if they are adjacent and add up to
enter the number that belongs in the green box

Explanation:

Step1: Recall the definition of a linear pair

A linear pair of angles is formed when two adjacent angles form a straight line.

Step2: Determine the sum of angles in a straight line

The measure of a straight - line angle is \(180^{\circ}\).

Answer:

\(180\)