Question

r° 35° 25° r = _

Explanation:

Step1: Recall the triangle angle - sum theorem

The sum of the interior angles of a triangle is \(180^{\circ}\). So, \(35^{\circ}+25^{\circ}+r^{\circ}=180^{\circ}\).

Step2: Solve for \(r\)

First, add \(35^{\circ}\) and \(25^{\circ}\): \(35 + 25=60\). Then the equation becomes \(60^{\circ}+r^{\circ}=180^{\circ}\). Subtract \(60^{\circ}\) from both sides: \(r = 180 - 60\).

Answer:

\(r = 120\)