Question

1) The measures angles of a triangle
are x°.(x-20), (-40). Find the
measure of each angles​

Answer 1

Answer:

please mark as brainliest

Step-by-step explanation:

sum of all the angles of a triangle =180°

therefore,

x+(x-20) +(x-40) =180

=>3x-60=180

=>3x=180+60

=>3x=240

=>x=240/3

=>x=80

Now, measure of each angle

1st angle=x°=80°

2nd angle=(x-20) °=(80-20) °=60°

3rd angle=(x-40) °=(80-40)°=40°

hope it helps!

Answer 2

Step-by-step explanation:

according to angle sum property

X+(X-20)+(-40)=180

X+X-20-40=180

2X-20-40=180

2X-60=180

2X=180+60=240

X=240/2=120