Question

name the marked angle in 2 different ways.
(there is a triangle with vertices q, r, s, and the marked angle is at r. below the triangle, there are two boxes to fill in the angle names and a submit answer button.)

Explanation:

1. An angle can be named by its vertex letter alone if it's the only angle at that vertex. Here, the marked angle is at vertex R, so it can be called ∠R.
2. An angle can also be named using three letters, with the vertex letter in the middle, representing the two sides forming the angle. For this angle, the sides are RQ and RS, so it can be called ∠QRS.

Answer:

$\angle R$
$\angle QRS$