Question

If three angles of a quadrilateral are 60 degree 45 degree 100
degree find the fourth angle

Answer 1

Answer:

Three angles of a quadrilateral = 60°,45°,100°

sum of total angles of a quadrilateral = 360°

The fourth angle = 60°+45°+100°+x° = 360°

= 205°+x° = 360°

= x° = 360°-205°

= x° = 155°

Therefore,the fourth angle = 155°