Question

Three angles of a quadrilateral are 72°,90°and 104°.find its fourth angle.​

Answer 1

sum of all angles in a quadrilateral = 360

degree

72 degree + 90 degree + 104 degree + x =360

266+x=360

x=360-266

x=94 degree

Answer 2

Given

first angle of quadrilateral=72°

second angle =90°

third angle =104°

and fourth angle =?

As we know that

sum of angles of a quadrilateral =360°

=72°+90°+104°+ fourth angle = 360°

=266°+fourth angle =360°

=fourth angle =360°-266°

=fourth angle=94°

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