Question

The three angles of a quadrilateral are 55°

, 65° and 105°

. What is the fourth angle?​

Answer 1

Step-by-step explanation:

fourth angle be x

55°+65°+105°+x=360°

225+x=360

X=360°-225°

X=135°

Answer 2

let, the angle be x

55°+65°+105°+x=360

x=360-225

x=135