Answer :
Let the angles be x
- ∠QRT = x
- ∠TRS = x
We are taking both angles as x because they are equal!
[tex] \mathcal{∠QRT + ∠TRS = 180 \degree}[/tex]
[tex] \tt \: x + x = 180 \degree[/tex]
[tex] \tt \: 2x = 180 \degree[/tex]
[tex] \tt \: x = 90 \degree[/tex]
➪ Thus, The measure of both angles is 90°...~