3. AABC with coordinates A( 8, -12), B (-6, 0), and C(4, -8) is dilated about the origin. (3pts)
The image of A is A'(-6, 9). Find:
Scale factor

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

there were a lot of them but the first one to pop up on a google search was bts

your answer is

a.

5

step-by-step explanation: