Final answer:
Unable to provide a specific answer for the measure of angle BDC without additional context or information about the geometric relationship between points A, B, C, and D.
Step-by-step explanation:
The question appears to be asking about angles in a geometric figure, but the provided information is insufficient to give a specific answer to what the measure of angle BDC is. There seems to be a mix-up with some physics-related content which is not relevant to solving a problem about geometric angles. To find the measure of angle BDC, more context or additional information about the angles and how they relate to each other within a specific geometric figure would be required. For example, knowing if points A, B, C, and D are part of a circle or a polygon, and how they are connected, would be critical in determining the requested angle measurement.