Question

1. find the value of y.

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 \(x = 180^\circ - 72^\circ - 68^\circ\)
\(x = 180 - 72 - 68 = 40^\circ\)

Step2: Find the value of \(y\)

The angle \(y\) and the angle \(x\) are supplementary (they form a linear pair), so \(y + x = 180^\circ\)
Substitute \(x = 40^\circ\) into the equation: \(y = 180^\circ - 40^\circ = 140^\circ\)

Answer:

\(y = 140^\circ\)