Question

find the value of x

Explanation:

Step1: Recall angle - sum property of a triangle

The sum of the interior angles of a triangle is 180°.

Step2: Set up an equation

Let the three angles of the triangle be \(x\), 60°, and 40°. Then \(x + 60+40=180\).

Step3: Solve the equation for \(x\)

First, simplify the left - hand side: \(x + 100 = 180\). Then subtract 100 from both sides: \(x=180 - 100\).

Answer:

80