Solve the following :
In an isosceles triangle, the base angles are equal. The vertex angle is 40°. What are the base angles of the triangle ? (Re-member, the sum of three angles of a triangle is 180°).
Let the base angles of an isosceles triangle be x° According to the question 2x° + 40° = 180° 2x° = 180° – 40° 2x°= 140
The base angles are 70° and 70°