Fill in your answers on the Chpt 21 Worksheet. To answer the questions that follow, use the mouse to zoom and move the models. Use the Chime pop-up menu to change display styles and to go to 2-D Rendering. For help with model manipulation, see the Chime Tutorial or review the Mouse Controls. You may install Chime if it is not already installed. 

An answer is provided for each problem identified by an asterisk next to the problem number. You should do these problems first, check your answers, and then do the rest.