3 dan 4 jawab ya tinggal 2 nomor lg Dit : a) nilai X b) sudut kln c) sudut nlm

Garis dan Sudut

No.3
a) nilai X
<KLN + <NLM = <KLM
2X + 8X = 180°
10X = 180
X = 180/10
X = 18

b) <KLN
<KLN = 2X
<KLN = 2 x 18 = 36°

c) <NLM
<NLM = 8X
<NLM = 8 x 18 = 144°

No.4
a) nilai a
<DEN + <NEG + <GEF = <DEF
46 + a + 29 + 5a + 15 = 180°
6a + 90 = 180
6a = 180 - 90
6a = 90
a = 90/6
a = 15

b) <NEG
<NEG = a + 29
<NEG = 15 + 29
<NEG = 44°

c) <GEF
<GEF = 5a + 15
<GEF = 5 x 15 + 15
<GEF = 75 + 15
<GEF = 90°

*semoga membantu. sukses selalu ^_^