Mathematics
Grade-7
Easy

Question

If angleCOB is 124°, then angleBOD is _____________.

  1. 56°    
  2. 75°    
  3. 105°    
  4. 35°    

hintHint:

angleCOB =124°
angleBOD + angleCOD = 180°

The correct answer is: 75°


    angleCOB =124°;
    then angleBOD is
    angleBOD + angleCOD = 180°, angleBOD = 180° - 124°,angleBOD = 56°.

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