When emplоying the pаrаlleling technique tо expоse periаpical dental images, many 90-degree angles are formed which involve a combination of the following: the biting surface of the bite block, the central ray, the receptor, the long axis of the tooth, and the opening of the PID. Describe where these right angles are formed. The first example is completed for you. Use this illustration to help identify the right angle locations. a. between the biting surface of the bite block and the receptor b. between the ______________________ and the ___________________ c. between the ______________________ and the ___________________ d. between the ______________________ and the ___________________ e. between the ______________________ and the ___________________