Given abcd is a trapezoid. Ba = cd. Prove bd = ca

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1