Which of the following points is on the unit circle ?
a: 1,1
b: 1/4, 3/4
c : 1/2,1/2
d: 0,0
e: radical 3/2, 1/2

Circle a has center of (2,3) and a radius of 5 and circle b has a center of (1,4) and a radius of 10. what steps will show that circle a is similar to circle b 1) dilate circle a by a scale factor of 2 2) translate circle a using the rule (x+1,y-1) 3) rotate circle a 180 degrees about the center 4) reflect circle a over the y-axis