Question

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Answer 1

Answer:

60

Step-by-step explanation:

since DE is parallel to BC angle D and angle B will be corresponding angels so they will be equal

so we know angle A and angle B as well

so angle C =180-50-70=60

Answer 2

Step-by-step explanation:

angle ade = 180-70+50

angle ade = 180-120

angle ade = 60

angle Dec = 180-60

angle Dec = 120

angle ECB = 180 - 120

angle ECB = 60