Jawab:
6. B
7. C
Penjelasan dengan langkah-langkah:
No. 6
∠abc = 180°
∠abd = 7x°
∠dbc = 5x°
7x° + 5x° = 180°
12x° = 180°
x = 15°
jadi,
∠abd = 7(15°)
∠abd = 105°
No. 7
∠spq = 90°
∠spr = 8x°
∠qpr = 10x°
8x° + 10x° = 90°
18x° = 90°
x = 5°
∠qpr = 10(5)°
∠qpr = 50°
Maka bdesar sudut penyikunya adalah 40°
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Jawab:
6. B
7. C
Penjelasan dengan langkah-langkah:
No. 6
∠abc = 180°
∠abd = 7x°
∠dbc = 5x°
7x° + 5x° = 180°
12x° = 180°
x = 15°
jadi,
∠abd = 7(15°)
∠abd = 105°
No. 7
∠spq = 90°
∠spr = 8x°
∠qpr = 10x°
8x° + 10x° = 90°
18x° = 90°
x = 5°
jadi,
∠qpr = 10(5)°
∠qpr = 50°
Maka bdesar sudut penyikunya adalah 40°