Respuesta :

sarah570ardila
It’s going to be 140, if you need to show work it’s 180-130=50 then 180-90=90 then 90+50=140
RedBeetle

∠AED + ∠AEB = 180° (linear pairs)

∠AED + 90° = 180°

∠AED = 90°

Again,

∠DEC + ∠BEC = 180° (linear pairs)

∠DEC + 130° = 180°

∠DEC = 180° - 130°

∠DEC = 50°

Now,

∠AEC = ∠DEC + ∠AED = 90° + 50° = 140°

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