Question

Please answer the (b) part of the question.​

Answer 1

Answer:

x=140°

y=90°

Step-by-step explanation:

let the external angle be a

since, a=90°

therefore, y=90°

since, x+y+70°+60°=360°(angle sum property of a quadrilateral)

→x+90+130=360

→x=360-220

→x=140°

Answer 2

Step-by-step explanation:

Let,

the value of y = 90 degree

we know that the sum of all angles of a quadrilateral = 360 degree

60+70+x+90=360

220+x =360

x = 360-220

x = 140 degree