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In a triangle DEF, points A, B, and C ar...

In a triangle DEF, points A, B, and C are C are taken on DE, DF and EF respectively such that EC = AC and CF = BC. If `angleD=40^@` then, `angleACB =` ?

A

140

B

70

C

100

D

80

Text Solution

Verified by Experts

The correct Answer is:
C
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