Question

the r can be calculated. 74 ° because ∠ucb the r and are

Explanation:

Step1: Identify the relationship

We know that when two angles are congruent (equal in measure), they have the same angle - measure. In the context of geometric construction (as indicated by the arc - like markings which are often used to show congruent angles in angle - copying or similar geometric operations), \(\angle UCB\) and \(\angle DRL\) are congruent.

Step2: Determine the measure

Since \(\angle UCB\) and \(\angle DRL\) are congruent (by the property of the geometric construction shown in the figure, where the arc markings imply that the angles are made in a way that preserves their measure, similar to the concept of copying an angle in basic geometry), and we are given that the measure of one of the congruent - type angles (in this case, we assume the relationship based on the geometric figure's construction cues) \(\angle UCB\) corresponds to \(\angle DRL\) in terms of congruence.

Answer:

The first blank is \(\angle DRL\) and the second blank is “congruent”.