Question

find the measures of the angles of a triangle when one of the angle is 140° & other two angles are equal​

Answer 1

Step-by-step explanation:

Let the other two angles be x and x

As we know,

sum of all angles of triangle =180

140 +x+x =180

140 +2x =180

2x=180-140

2x =40

x=20

Answer 2

Answer:

140 +2a =180

180-140=2a

40 =2a

a=20

two angels are20° and other is 20°