geometry

 

In square ABCD, point P is in the square, such that triangle CDP is equilateral.  What is angle CPB?   

 

I don't think it can be drawn to those description, BUT...

If angle CPB is an internal angle of an equilateral triangle, then it's 60^o no matter where the triangle is. 

_.

In square ABCD, point P is in the square, such that triangle CDP is equilateral.  What is angle CPB?

 

angle CPB = 75º