Subject :IMO Class : Class 7
In the following figure, if AB = AC, then x is
A 80°
B 70°
C 60°
D 110°
please explain
Ans 1:
Class : Class 9
Angle BAC = x + 40 - x
=> 40
As triangle ABC is an isosceles triangle with AB = AC, angle acb = angle abc = x
Therefore, as angle abc + angle acb + angle bac = 180 then,
x + x + 40 = 180
=>2x = 180 - 40
=>2x = 140
=>x = 70
Ans 2:
Class : Class 7
D
Ans 3:
Class : Class 9
d