The circular measure of the unequal angle (vertical angle) of an isosceles triangle is (3π/7). The circular measure of one of the equal angles must be.
1
4π/7
2
2π/7
3
3π/7
4
5π/7
The circular measure of the unequal angle (vertical angle) of an isosceles triangle is (3π/7). The circular measure of one of the equal angles must be.