Question

(d) can these be the angle measures of a triangle? 42°, 18°, 120° ○ yes ○ no

Explanation:

Step1: Recall triangle angle sum

The sum of angles in a triangle is \(180^\circ\).

Step2: Calculate the sum of given angles

Sum \(= 42^\circ + 18^\circ + 120^\circ\)
\(= 60^\circ + 120^\circ\)
\(= 180^\circ\)

Answer:

Yes