Question

reviewing undefinable terms the intersection of plane r and plane p is line db. point h is not on plane p. ce and db intersect at point

Explanation:

Step1: Recall plane - intersection property

Two distinct planes intersect in a line. From the figure, plane R and plane P intersect in line DB.

Step2: Identify non - plane points

By observing the figure, point H is outside plane P.

Step3: Locate intersection of lines

Lines $\overrightarrow{CE}$ and $\overrightarrow{DB}$ intersect at point D as seen from the figure.

Answer:

The intersection of plane R and plane P is line DB.
Point H is not on plane P.
$\overrightarrow{CE}$ and $\overrightarrow{DB}$ intersect at point D.