tolong ya besok kumpul pake cara makasih no 4 -7

4. 180° - 63° = 117° (C)

5. x + x = 166°
. x = 166°/2 = 83°
. B4 = 180°-83°
. = 97° (B)

6. 3x = 180° - 54°
. x = 126°/3 = 42°
. 4y = 180° - 54°
. y = 126°/4 = 31,5°
. x+y = 42° + 31,5°
. = 73,5 (D)

7. 4x = 180° - 40°
. x = 140°/4 = 35° (B)

MAAF KALAU ADA YG SALAH;)