3. Figure    10D IN  ANSWERING  QUESTIONS  10-8  THROUGH  10-10, REFER TO FIGURE 10D. 10-8. What is the size of the deflection angle  between  traverse  lines  BC and CD? 1. 60° 2. 90° 3. 105° 4. 120° 10-9. How many degrees are there in the exterior  angle  ABC? 1. 205° 2. 215° 3. 220° 4. 235° 10-10. How many degrees are there in the interior  angle  ABC? 1. 120° 2. 130° 3. 140° 4. 150° 10-11. TO convert a bearing in the quadrant to the equivalent azimuth, you must use which following   calculations? 1. Add 90° to the bearinq SE of the 1. 2. Add 180° 3. Subtract 4. Subtract to  the  bearing the bearing from 180° the bearing from 360° 10-12. Assume that a measured forward bearing on a compass-tape survey was N15°35’W and the back bearing on the same line was S15°15’E. The difference was probably caused by which of the following conditions  ? 1. Declination 2. Local attraction 3. An error in reading the compass 4. A defect in the compass mechanism 10-13. The magnetic declination at a given point on the surface of the earth is the horizontal angle that the magnetic meridian makes with what  line? 1. The agonic line 2. The true meridian The isogonic line 4. The assumed meridian Figure    10E IN ANSWERING QUESTIONS 10-14 THROUGH 10-16, REFER TO FIGURE 10E. 10-14. What is the approximate compass bearing  of  the  object? 1. Due  north 2. S70°W 3. S30°W 4. S30°E 10-15. What is the approximate magnetic bearing of the object if the local attraction  is  20°E? Due west 2. S50°W 3. Due  south 4. N20°W 67