Question

please answer this question

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Answer 1

Answer:

i guess the ans is 70°

Step-by-step explanation:

as angle a =b (corresponding angles)

angle d + angle b + angle e=180° ( angle sum property of triangle)

30°+40°+angle e =180°

angle e = 180°-70°

angle e = 110°

angle deb+angle dea +angle aec+angle eca = 360°(conplete angle )

110°+x+110° +x=360°

2x=360°-220°

2x=140°

x=140°/2

x=70°

hence dea =70°