Question

Three angle of a quadrilateral are 123,50and 40.find it 4 angle

Answer 1

Answer:

147 degrees

Step-by-step explanation:

the sum of interior angles of a quadrilateral = 360 degrees

so 4 angles of quadrilateral = 123 + 50 + 40 + X = 360 degrees

so 213 + X = 360 degrees

So X = 360 - 213 = 147 degrees

Hope this helps :)

Answer 2

Answer:

Here your answer

147°

Step-by-step explanation:

Sum of quadrilateral = 360°

_____________

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/____________/

it is a quadrilateral

let the 4rth side be x

123°+50°+40°+x° = 360°

213°+x° = 360°

__》transporting 213° to RHS

x° = 360° -- 213°

x° = 147°

this is the right answer