Question

2 angles of quadrilateral are 2 angles of100 .60 and 80 find the 4th angle

Answer 1

Step-by-step explanation:

Let the angles be 1,2,3,4

Where,

1=100

2=60

3=80

4=x

So,

1+2+3+4=360 (Sum of all angles of a quadrilateral)

100+60+80+x=360

240+x=360

x=360-240

x=120

So the fourth angle is equal to 120 degrees.

Thank you...