Question

pls answer this math questions
pls help
also give working

Answer 1

Answer:

40°

Step-by-step explanation:

let equal angle be X

sum of angles in quadrilateral=360°

280°+2x=360°

2x=360-280°=80°

X=40°

hope you understood.

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Answer 2

Answer:

∠C = ∠D = 40°

Step-by-step explanation:

Hey buddy,

let the four vertices of the quadrilateral ABCD be A, B, C and D in order.

∠A + ∠B = 280°

∠C = ∠D

∠A + ∠B + ∠C + ∠D = 360°

280° + ∠C + ∠C = 360°

2∠C = 360° - 280°

        = 80°

∠C = 80°/2 = 40°

∠D = 40°

I hope it helped you.

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