Question

find the value of unknown angles : ​

Answer 1

Answer:

Value of Y= 60

X value don't know...

Answer 2

Answer:

y=60 x=40 2x=80

Step-by-step explanation:

Given

The exterior angle of a triangle = 120°

To find

The value of x, y and 2x.

Solution

Here,

120° and y is a straight angle I.e. 180°.

So,

120°+y=180°

》y=180°-120°

》y=60°

Now,

x+2x+60°=180°

》3x+60°=180°

》3x=180°-60°

》3x=120°

》x=40°

Therefore value of 2x

2x

=2×40

=80