Question

In a quadrilateral ABCD , if A = 100° , B = 60° , C = 60° . then find D.​

Answer 1

Step-by-step explanation:

hence it is quadrilateral all angles are 360

100+60+60+ D=360

220+D=360

D=360-220

D=140

Answer 2

Answer:

D= 140

Step-by-step explanation:

A+B+C+D=360 (sum of all angles of quadrilateral 360)

now put down the value and solve it