Question

In the adjoining figure, it is being given that AO || CD, OB || CE and
angle AOB = 50°
Find the measure of angle ECD.
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Answer 1

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Answer 2

Step-by-step explanation:

GIVEN:AO//CD

OB//CE

Angle AOB=50

Angle AOB =Angle CDB = 50 [Corresponding angles]

(SINCE AO//CD)

Angle CDB+ Angle DCE = 180

(Co interior angles)

50+Angle DCE=180

Angle ECD=180 -50

Angle ECD=130

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