Question

In an isosceles triangle, the base angles are equal. The vertex angle is 400

. What

are the base angles of the triangle ? (Remember, the sum of three angles of a

triangle is 1800

).​

Answer 1

Step-by-step explanation:

let the base angles be x and x

Now,

x+x+40=180

=>2x=180-40

=>2x=140

=>x=140/2

=>x=70

So the base angles are = 70 and 70

Answer 2

Answer:

So both the base angles are of 70°

Step-by-step explanation:

LET THE BASE ANGLES ARE  x and x

Then sum of three angles:

=x+x+40=180

2x=180-40

2x=140

x=70°

So both the base angles are of 70°