Question

The three angles of a quadrilateral are 60 ,80° and 120°. Find the
fourth angle?​

Answer 1

Answer:

The fourth angle is 100°

Step-by-step explanation:

Let, the fourth angle be x

We know that,

60° + 80° + 120° + x = 360°( Angle sum property)

260° + x = 360°

x = 360° - 260°

x = 100°

Answer 2

solution:

Given:

the total quadrilateral angle =360°

the first angle=60°

second angle=80°

third angle =120°

To find :the fourth angle

soln:60°+80°+120°+fourth angle=360°

260°+ fourth angle=360°

fourth angle=360°-260°

:. fourth angle=100°