Acircle has its center at (1, 4) and a radius of 2 units. what is the equation of the circle?

(x − 1)2 + (y − 4)2 = 4
(x + 2)2 + (y + 4)2 = 2
(x + 1)2 + (y − 4)2 = 4
(x − 1)2 + (y − 4)2 = 2

last one or something else?

Question 2 (essay worth 10 points) (03.02 mc) in δabc shown below, point a is at (0, 0), point b is at (x2, 0), point c is at (x1, y1), point d is at x sub 1 over 2, y sub 1 over 2, and point e is at the quantity of x sub 1 plus x sub 2 over 2, y sub 1 over 2: triangle abc is shown. point d lies on segment ac and point e lies on segment bc. a segment is drawn between points d and e. point a is at the origin. prove that segment de is parallel to segment ab.