4-64. When sketching a long, straight vertical line, you should first place a dot at each end of the line. What is your next step? 1. Connect the dots with a series of short  pencil  strokes 2. Connect the dots with one long pencil stroke 3. Place additional dots at intermediate points along the line,    then connect the dots with a series of short pencil strokes 4. Place additional dots at intermediate points along the line,    then connect the dots with one long pencil stroke 4-65. To divide lines and areas into equal 4-66 4-67. 4-68. parts, you should use what process? 1. Visual approximation 2. Arbitrary estimation 3. Geometric construction 4. Dividing and redividing What is the basic angle you should use when sketching? 1. 30° 2. 60° 3. 45° 4. 90° Which of the following items will serve as a substitute for a pencil compass? 1. 2. 3. 4. One Pencil,    piece of string, and a thumbtack Pencil,    rubberband,  and  a thumbtack Two pencils and a rubberband Two pencils and a piece of paper method of freehand sketching of a circle calls for you rotate the-paper with one hand. What part of your hand serves as the pivot point? 1. The  side 2. Index finger only 3. Second finger only 4. Either the index or second finger,    whichever is easier Figure 4E IN ANSWERING QUESTIONS 4-69 AND 4-70, YOU ARE DFUIWING A CURVE TANGENT TO STRAIGHT LINES AND HAVE PROCEEDED AS FAR AS SHOWN IN FIGURE  4E. 4-69. What should your next step be? 1. Placing a dot at D 2. Sketching a light curve through D between B and C 3. Drawing a straight line between B and C 4. Drawing a straight line from A through D midway between B and C 4-70. What is the preferred way to sketch the curve after you place the dot or X through which the curve is to pass? 1. Start at B,    and proceed through the dot or X, and end at C 2. Start at C,   proceed through the dot or X,    and end at D 3. Start at the dot or X and sketch to C,    return to the dot or X, and then sketch to B 4. Start at D,   proceed to C, back to D,   and then to B 29