Question

q.13 interior angles of polygons
what is d?
d = °

Explanation:

Step1: Recall the sum of interior angles of a triangle

The sum of interior angles of a triangle is \(180^{\circ}\).

Step2: Set up the equation

Let the three angles of the triangle be \(80^{\circ}\), \(65^{\circ}\), and \(d\). Then \(80 + 65 + d=180\).

Step3: Solve for \(d\)

First, calculate \(80 + 65=145\). Then \(d = 180-145\).

Answer:

\(35\)