Question

In the adjacent figure, if angle A = 40°, CE || BA and angle ECD = 55°, find angle ACB and angle ABC
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Answer 1

Answer:

angle ACB is 85° and angle ABC is 55°

Step-by-step explanation:

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Answer 2

Answer:

45 degrees

Step-by-step explanation:

angle ACE = angle A (alternate interior angles are equal if BA ll CE)

= 40

angle ACD = ACE + ECD = 40 + 55 = 95

in triangle ABC, sum of all angles is 180

angle B + angle A + angle ACB = 180

angle ABC = 180 - (95+40) = 180 - 135 = 45 degrees