Question

in the figure AB=AC,angleBAD=30°,and AE=AD. then x=?

Answer 1

BAD=30
SO
CAD is also 30
DBA=60
ECD=60
ADC=90
then
ADC-ECD
90 - 60
= 30
SO
the X =30

Answer 2

Answer:

AB = AC, means that the red angles are equal.

AE = AD, means that the blue angles are equal.

For triangle ABD: Red + 30° + (180° - Blue - x) = 180°. This gives Red - Blue - x + 30° = 0

For triangle DEC: x + (180° - Blue) + Red = 180°. This gives Red - Blue + x = 0

Equate: Red - Blue - x + 30° = Red - Blue + x

2x = 30.

x = 15°