Question

(vii) part. Find x using suitable properties of s triangle class 7

Answer 1

X= 60° bxxhdgxjgzhxidjfjicjcjxhd

Answer 2

naming this triangle as ABC,

so in ∆ABC,

AB=AC (given),

since sides are equal then it's opposite angles are also equal,


then

angle B = angel C,


now
the sum of adjacent interior and exterior angle is 180°,

then

interior angle C + exterior angel C = 180°,


interior angle C + 120° =180°,


then


interior angle C =180° - 120° =60°,


therefore

angle B = angle C =60°