Answer: By using external angle property x+50 o =120 o ∴x=70 o Sum of all angles of a Δle is 180 o 50 o +x+y=180 o 50 o +70 o +y=180 o ∴y=60 o Reply
Answer:
By using external angle property
x+50
o
=120
o
∴x=70
o
Sum of all angles of a Δle is 180
o
50
o
+x+y=180
o
50
o
+70
o
+y=180
o
∴y=60
o