Question

Three angles of a quadrilateral are 75 degree, 90 degree, 75 degree. Find the measure of the fourth angle.​

Answer 1

Solution :

Sum of angles of a quadrilateral is 360°

∴ fourth angle be,

⇒ 360−(75+90+75)=120°

Answer 2

Solution :

Sum of angles of a quadrilateral is 360°

∴ fourth angle be,

⇒ 360−(75+90+75)=120°

Answer 3

Solution :

Sum of angles of a quadrilateral is 360°

∴ fourth angle be,

⇒ 360−(75+90+75)=120°