Determine the unknown side of the similar triangle.
A)
2
B)
3
4
D)
5

(C). 4

Step-by-step explanation:

Sides of the similar triangles are proportional.

if X ~ Y , then = ⇒ x = 4

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source:

idk

step-by-step explanation:

use that smart brain