Question

Tlng mnta bntuannya untuk mengetahui jwbn no 37-39 .. kl ns cpt ya .. mksih: ) #bgi yg thu hrp memberi thu ya!!

Answer 1

37 . a=50
b=130
c= 130
d= 50
e=100
f= 80
g=80
h=50
38. a. 105
b.50
39 x+y+z = 70

Answer 2

37.
a = 180 - 50 - 80 = 50° *180 itu jumlah sudut segitiga
b = 180 - 50 = 130° *berpelurus dg a
c = b = 130 *sehadap dg b
d = a = 50° *sehadap dg a atau d = 180 - 130 = 50° *berpelurus dg c
e = ? -> kan itu jadi mbentuk trapesium ACEsama yg 80°
   e = 360 - 50 - 80 - 130 = 100°
f = 180 - d - 50 = 180 - 50 - 50 = 80° atau f = 180 - e = 180 - 100 = 80°
g = 80° *dlm berseberangan dg 80°
h = 180 - g - 50 = 130 - g = 130 - 80 = 50°

38.
a. x = 180 - ((180-30):2) = 180 - 75 = 105°
b.  maaf nggk tau

39.
x => (180-40) / 7 = 140 / 7 = 20°
y =>7x = 80 + 2y => 140 = 80 + 2y => 30° = y
z => 4z = 180 - 40 - 60 => z = 80/4 = 20°

x + y +z = 20 + 30 + 20 = 70°