Question

If the three angels of quadrilateral are 90°, 110°and 80°find the fourth angle

Answer 1

Answer:

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BY ANGLE SUM PROPERTY

SUM OF ALL ANGLES OF A QUADRILATERAL IS 360°

THEREFORE,

90 + 110 + 80 + A = 360°

A = 360 - (90 + 110 + 80)

A = 360 - 280

A = 80°

FOURTH ANGLE = 80°

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