Question

in a triangle one side equal 140° and two side are equal to each other​

Answer 1

Answer:

20°

Step-by-step explanation:

We know that the sum of interior angle is 180°

so , Angle A + angle B + angle C = 180°

let be angle B = angle C = x

140 + x + x = 180°

140 + 2x. = 180°

2x = 180° - 140°

2x = 40°

x = 40/2

x = 20°

Hope this helps you

Answer 2

Let the remaining side be x and y
140+x+y = 180 [ being sum of angles of a triangle ]
Or, 140+x+x = 180
Or, 140+ 2x = 180
Or, 2x = 180 - 140
Or, 2x = 40
Or, x = 40/2
Or, x = 20