8. To determine the vertical angulation for a mandibular cross-section occlusal radiograph, the central ray of the x-ray beam is directed A. Perpendicular to the imaginary bisector. B. Parallel to the imaginary bisector. C. Perpendicular to the image receptor. D. Parallel to the image receptor. 9. Referring to the previous question and assuming the patient's he position is correct, at which of the following angles would the P most likely be set? A. +65 degrees B. +45 degrees C. -55 degrees D. 0 degrees 10. Which of the following would result in a retake of a maxillary to graphical radiograph? A. Long dimension of image receptor positioned across arch buccal-to-buccal B. Conecutting in the posterior C. Embossed dot positioned toward the anterior D. Image receptor positioned such that 1/4 inch protru beyond the incisal edges