tolong dibantu ya!!! Soalnya susah kagak bisa jawab

3. ∠ACB = ∠DFE

∠ACB = 180° - 70° - 50°
∠ACB = 60°

∠D = ∠A = 70°
∠F = ∠C = 60°

Jawaban (A). 70° dan 60°

4. (CE / CD) = (AE / AB)
[tex] \frac{8}{12} = \frac{12}{x} [/tex]
8x = 12 × 12
8x = 144
x = 144 / 8
x = 18

Jawaban  (A). 18 cm

5. rusuk DE = rusuk XY
Panjang DE = 8

Jawaban (B). 8 cm