Question

59° r° r = ____

Explanation:

Step1: Recall angle - sum property of a triangle

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

Step2: Set up the equation

We know one angle is 90° (right - angle) and another is 59°. Let the third angle be \(r\). So, \(90 + 59+r=180\).

Step3: Solve for \(r\)

First, add 90 and 59: \(90 + 59=149\). Then, \(r = 180-149\).
\(r=31\)

Answer:

31