Question

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

Answer 1

Answer:

70 degree is the answer

Let the angles be x

x + x + 40 = 180

2x = 140

x = 70

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Answer 2

Answer:

70° and 70°

Step-by-step explanation:

Let the base angles be x(As they are equal).

According to question,

Sum of all angles = 180°

=> 40° + x + x = 180°

=> 40° + 2x = 180°

=> 2x = 140°

=> x = 140°/2 = 70°