Determination of an Angle || A B C D MP ON Given triangles ∆ABC and ∆ADC, having AB=AC=AD in a square □ MNOP. Line N C = C O, and BD is parallel to NO. What is the value of  BCD?

Determination of an Angle || A B C D MP ON Triangles ∆ABC and ∆ADC are Identical.

Determination of an Angle || A B C D MP ON Triangles ∆ABC and ∆ADC are Identical. ∆ABC and ∆ADC are isosceles.

Determination of an Angle || A B C D MP ON Triangles ∆ABC and ∆ADC are Identical. ∆ABC and ∆ADC are isosceles. ∆ABD is equilateral.

Determination of an Angle || A B C D MP ON Triangles ∆ABC and ∆ADC are Identical. ∆ABC and ∆ADC are isosceles. ∆ABD is equilateral. 60°

Determination of an Angle || A B C D MP ON Triangles ∆ABC and ∆ADC are Identical. ∆ABC and ∆ADC are isosceles. ∆ABD is equilateral. 60° 30° 75°

Determination of an Angle || A B C D MP ON Triangles ∆ABC and ∆ADC are Identical. ∆ABC and ∆ADC are isosceles. ∆ABD is equilateral. 60° 30° 75°  BCD = 150°