Question

Find the value of x and y in the following figure.​

Answer 1

Step-by-step explanation:

70°+80°+y=180°. (sum of all angles of triangle are 180°)

150°+y=180°

y=180°-150°

y=30°

x+y=180°. ( sum of linear pair angles is 180°)

x+30°=180°

x=150°

Answer 2

Answer:

sum of the three angles of a triangle=180°

so,

80°+70°+y=180°

=> y=180°-80°-70°

=> y= 180°-150°

=> y=30°

again,

external angle of a triangle=sum of the distance internal angle

so, x=(70+80)°=150°