Triangles ABD, CBD and ADC are all isosceles. Find the angle x.
AC = AD
2 answers:
Answer:
Angle BDA=x
Sum of int. angles=opp. ext. angle
Angle CBD=2x
Angle BCD=2x
Angle CDB=180-4x
Angle BCD=BDC
So, 2x=180-4x+x
x=36°
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