The marked angles and side BD make up two adjacent angles and a side not between them. The applicable theorem is ...
AAS Theorem
Answer:

Step-by-step explanation:
The similar triangles are drawn in the figure attached.
As shown in the figure, the smaller triangle ΔABC, and the larger triangle ΔA'B'C' share the same slope; therefore, the slope of the hypotenuse is the length of the triangle ΔA'B'C' divided by its base:

Therefore, the equation of the hypotenuse is

-4 , -8 because -4 is on the x axis and -8 is on the y axis
1+2+3=6 and 1x2x3=6 so your answer is 1,2 and 3.