Final answer:
The student needs to determine the measures of unlabeled angles with provided angle measurements. The right answer depends on the specific previous context, such as a triangle, where the sum of angles equals 180°. Tools from geometry, like the concept of complementary and supplementary angles, are used to find the unknown angles.
Step-by-step explanation:
The student is asking for help in finding the measures of unlabeled angles based on given pairs of angle measurements. Various tools and concepts from geometry are used to find unknown angle measurements. Angles are typically measured in degrees (°), which can be subdivided into minutes ('), and seconds ("). Keep in mind that the sum of the angles in a triangle must add up to 180°.
If the question previously mentioned a triangle, for example, the two angles given in answer choice A would not be correct as their sum (87° + 273°) exceeds 180°. As such, the correct answer would depend on the context of the previous question, which is not provided. Typically, when looking for the measure of unlabeled angles, we rely on known properties, such as the sum of angles in geometric shapes, or use complementary and supplementary angles for calculation.