Question

In the given figure if ABC is an equilateral triangle and BDC is an isosceles triangle right angled at D then find the measurement of Triangle ABD

Answer 1

ABC is an equilateral triangle.

thus angle ABC=60 degree.

Traingle DBC is isosceles triangle .

Thus Angle DBC=47degree as DCB = 47.

Thus angle ABD = 60-47= 13 degree