The first shaded triangle is 144 cm.
Answer:
1. SSS; Triangle ABC is congruent to Triangle DEF; sorry there's no triangle symbol on here.
2. HL; CBA is congruent to ZYX; or ABC is congruent to XYZ
Step-by-step explanation:
Answer: 2(x + 4)(x - 4)
Hope this helped!
You have to subtract the degrees like in this picture: