Final answer:
The measure of angle L in parallelogram LMNO is 30° (C).
Step-by-step explanation:
C. In a parallelogram, opposite angles are equal. Therefore, if we know the measure of one angle, we can determine the measure of its opposite angle. Let's denote the given angle as angle A. In parallelogram LMNO, angles L and N are opposite angles, and angles M and O are opposite angles.
If the measure of angle A is 30°, then the measure of its opposite angle, angle L, is also 30°. This follows from the properties of parallelograms, where opposite angles are congruent. Therefore, the correct answer is 30° (C).
Understanding the properties of geometric shapes, such as parallelograms, is essential for solving problems involving angles and sides. In this case, recognizing that opposite angles in a parallelogram are equal allows us to find the measure of angle L based on the given information.