Question

three angles of a quadrilateral are 54 degree 80 degree and 116 degree find the measures of the fourth angle​

Answer 1

Answer:

THE SUM OF ALL ANGLES IN A QUADRILATERAL IS 360°

54 + 80 + 116 + x = 360°

250 + x = 360°

x = 360 — 250

x = 90°

Step-by-step explanation:

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Answer 2

Answer: 90°

Proof: According to the Angle Sum Property of quadrilaterals, Sum of all angles =360°

54°+116°+80°+x°= 360°

360°-250°=x°

x°=90°