Question

1. Given that AOB and COD are straight lines, find the values of the unknowns in each of the
following figures.

Answer 1

Answer:

4a = 64° and 2b = 96°

Step-by-step explanation:

Since, AOB = Straight line = 180°

Therefore, AOE +EOC + COB = 180°

=> 32° + 4a + 84° = 180°

=> 4a = 180° - 116°

=> 4a = 64°

Now,

Since, COD = Straight line = 180°

Therefore, COB + BOD = 180 °

=> 84° + 2b = 180°

=> 2b = 180° - 84°

=> 2b = 96°

Hence, 4a = 64° and 2b = 96°.