in the given figure....
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Answered by
0
Answer:
80 degrees
Step-by-step explanation:
first, we need to take out the value of ∠ECD,
also, we know that EF is parallel to CD.
∴, ∠ECD = 180-135 (135 is given)
∴ ∠ECD is 45.
now, we add 35 and 45 to get value of ∠BCD.
∴ ∠BCD = 80
also, AB Is Parallel to CD ,
Therefore, ∠ABC=∠BCD (altenate interior angles)
therefore ∠ABC s 80
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Answered by
1
Answer:
angle ABC =80
Step-by-step explanation:
angle CEF +ECD=180
=angle ECD=45
Angle ECD+BCE=angle BCD
=angle BCD=80
angle BCD = angle ABC
ABC = 80
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