What is the scale factor of AABC to ADEF?
A. 6
B. 1/6
C. 2
D. 1/2

1/6

Step-by-step explanation:

Side AB * scale factor = Side DE

72* scale factor = 12

Divide each side by 72

scale factor = 12/72

scale factor = 1/6

6

Step-by-step explanation: 72 is 6 times larger than 12, 66 is 6 times larger than 11, 42 is 6 times larger than 7

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

3; 9 is 8 to -4

step-by-step explanation: