Question

Please answer this question from the chapter Isosceles Triangles.
In the given question calculate 'x'

Answer 1

let D is the midpoint of AB where angleA= 50° and angle B= x

AD=CD and BD=CD

angle A = angle DCA (angle opp. to equal sides are equal)

angle B= angle DCB

so angle C = 50° + x

applying angle sum property of triangle

angle A + angle B+ angle C= 180°

50°+x+(50°+x)=180°

100+2x= 180°

2x= 80

x= 40