Question

a side of the triangle below has been extended to form an exterior angle of 145°. find the value of x.

Explanation:

Step1: Use the property of adjacent angles

Adjacent angles on a straight line sum to \(180^{\circ}\). So, \(x + 145=180\).

Step2: Solve for \(x\)

Subtract \(145\) from both sides of the equation: \(x = 180 - 145\).

Answer:

\(x = 55\)