Question

name the plane that is highlighted in the diagram below.

Explanation:

Step1: Recall plane naming rule

A plane can be named by three non - collinear points on it.

Step2: Identify points on the highlighted plane

Looking at the diagram, the highlighted plane contains points Q, R, N, M (or other combinations of three non - collinear points on it). A common way is to use three vertices, for example, points Q, M, N (or Q, R, N, but using three non - collinear is sufficient). Another valid combination is plane QMNR (or using three points like Q, M, N). The standard way is to name the plane using three non - collinear points on it. From the diagram, the highlighted plane has vertices Q, M, N, R. So we can name it as plane QMNR (or plane QMN, plane QMR, plane MNR etc., but the most appropriate with the given labels is plane QMNR or plane QMN (but checking the labels, Q, M, N, R are on the highlighted plane).

Answer:

Plane QMNR (or other valid names with three non - collinear points on the highlighted plane, e.g., Plane QMN, Plane QMR, Plane MNR. The most accurate with the given figure is Plane QMNR)