Question

tolong dijawab ya, jgn ngawur ​

Answer 1

Penjelasan dengan langkah-langkah:

GARIS dan SUDUT

8. C

5x + 4x + 9 = 180

9x = 180 – 9

9x = 171

x = 171/9

x = 19

pelurus SQR = 5x

= 5 × 19

= 95°

9. C

sudut 3 = 110° – 95°

sudut 3 = 25°

10. A

sudut BCA = 112° – 42°

sudut BCA = 70°

11. C

sudut A2 dan B3 sepihak

12. C

4x - 6 + 39 + 3x = 180°

7x = 180 - 33

x = 147/7

x = 21

sudut B = 4 × 21 – 6

sudut B = 84 – 6

sudut B = 78°

13. C

∅ = 50° + 180° – 150°

∅ = 80°

14. C

sudut A3 bertolak belakang dengan A1

A3 = A1 = 7 × 180°/(7+3)

A3 = A1 = 7 × 180°/10

A3 = A1 = 7 × 18°

A3 = A1 = 126°

15. B

x = 180 – (85 + 35)

x = 180 – 120

x = 60°

16. C

garis h + garis g = 180°

60° + 120° = 180°

garisnya sejajar