Question

the three angles of a quadrilateral are 60°,80°and 120° find the fourth angle​

Answer 1

Answer:

Step-by-step explanation:

according to angle sum property the sum of all angles of the quadrilateral is 360

so let the missing angle be x

so,

60+80+120+x = 360

260 + x = 360

x = 360 - 260

x = 100

so the missing angle is 100 degrees

hope it helps you :) and please mark as the brainliest.

Answer 2

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Let the fourth angle be x

We know that,

sum of angles of quadrilateral=360°

60°+80°+120°+ x =360°

260°+ x =360°

x=360°-260°

hence, x= 100°.......ans.