Question

In an isosceles triangle, the bas angles are equal he Vertex angle is 40°. What are the measure of base angle of the triangle ?​

Answer 1

Answer:

.Answer:

Let the base angles be x

Therefore,

x+x+40=180⁰

2x+40=180⁰

2x=180 ⁰ −40

2x=140⁰

x=70 Hence,

The base angles of the triangle are 70⁰,70⁰

Answer 2

• suppose base angles we don't know, let it be x°

• since both base are equal then x + x = 2x

• vertex angle is 40° . and sum of all angles of triangle is 180°

• 2x + 40 = 180

2x = 180 - 40 = 140

x = 140/2 = 70

x = 70°

Measure of both base angle would be 70° and 70°