Question

In a isosceles triangle, the base angles are equal.The vertex angle is 40 degree.What are the base angles of the triangle? (Remember that the sum of three angles of a triangle is 180 degree.)

Answer 1

Answer:

let the angles be x,y and z

=x+y+z=180 degree

=x+x+40=180

=2x=180-40

=2x=140

=x=70

so the base angles are 70 degree each.

Answer 2

Answer:

THE ANSWER IS =70°

Step-by-step explanation:

Let the base angles be equal to x,

The sum of all interior angles of a triangle

is 180°

x+x+40°=180°

2x+40°=180°

2x=180°-40°=140°

Dividing both side by 2,

2x/2=140°/2

=2x÷140°/2

=x=70°

Therefore, the base angles of the triangle are of 70° measure.

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