D. 14 dan 27,5
Penjelasan dengan langkah-langkah:
<CBA = <BAD = 5x°
<BCD = <ADC
4y° = 110°
y = 110°/4°
= 27,5°
< BAD + <ABC + <BCD + <ADC = 360°
5x° + 5x° + 110° + 110° = 360°
10x° + 220° = 360°
10°x = 360° - 220°
= 140°
x = 140°/10°
= 14
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D. 14 dan 27,5
Penjelasan dengan langkah-langkah:
<CBA = <BAD = 5x°
<BCD = <ADC
4y° = 110°
y = 110°/4°
= 27,5°
< BAD + <ABC + <BCD + <ADC = 360°
5x° + 5x° + 110° + 110° = 360°
10x° + 220° = 360°
10°x = 360° - 220°
= 140°
x = 140°/10°
= 14