Question

b) Three angles of quadrilateral are 60°, 70° and 100° final the fourth
angle.​

Answer 1

Answer:

We know that the sum of all the angles in a quadrilateral is 360

Then

Let the fourth angle be x

60+70+100+x = 360

x= 360-60-70-100

x= 130

hope it helps you

Answer 2

$\huge\colorbox{pink}{A᭄ɴsᴡᴇʀ}$

$\huge\boxed{\red{メ࿐130°}}$