Question

Three of the angles of a quadrilateral are 1200, 480 and 920.
What is the size of the 4th angle?

Answer 1

Q.Three angles of a quadrilateral are 120°, 48° and 92°

What is the size of the 4th angle?

Solution:

Let the fourth angle be x

120° +48°+92°+ x = 360°

[sum of four angles of a quadrilateral = 360°]

260° + x = 360°

x= 360°-260°

x = 100°

Therefore , Fourth angle = 100°

Answer 2

Step-by-step explanation:

=100 ☺