ABC is equal to AC and angle b is equal to 70 degree then in triangle abc are the mysterious ab is equal to AC and angle b is equal to angle c 70 level 2 angle c in triangle abc
Angle a +Angle b + angle c is equal to 180 degree due to property of triangle
Angle + 70 + 70 equal to 180
Angle a + 140 equal to 180
Angle a is equal to 40 degree