Question

In the given figure. AOB is a straight line. If angleAOC = 40°: angleCOD = 4xº and angleBOD = 3x° then
angleCOD=
a) 80°
b) 100°
c) 120°
d) 140°​

Answer 1

40 +4x+3x =180 °(straight angle)

7x=140 °

x=20 °

angle COD = 4x =80°

Answer 2

Angle COD=80°

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