tolong bantu jawab kkak:(
Penjelasan dengan langkah-langkah:
a.
< EGB + < GHD = 180°
2x - 9° + 147° = 180°
2x + 138° = 180°
2x = 180°-138°
2x = 42°
x = 42° : 2
x = 21°
Jadi, nilai x nya adalah 21°
b.
< BGH = 2x - 9°
< BGH = (2 × 21°) - 9°
< BGH = 42° - 9°
< BGH = 33°
c.
< AGH + < GHD = 180°
< AGH + 147° = 180°
< AGH = 180° - 147°
< AGH = 33°
d.
Penyiku Sudut BGH = 90° - 33° = 57°
e.
Pelurus Sudut BGH = 180° - 33° = 147°
a. 21°
b. 33°
c. 147°
d. 57°
e. 147°
Penjelasan dengan langkah-langkah:
a. (2x - 9°) + 147° = 180°
2x + 138° = 180°
2x = 180° - 138°
2x = 42°
x = 42°/2
= 21°
b. <BGH = 2x - 9°
= 2 . 21° - 9°
= 42° - 9°
= 33°
c. <AGH = 180° - 33°
= 147°
d. penyiku <BGH = 90° - 33° = 57°
e. pelurus <BGH = 180° - 33° = 147°
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