1.
AOB = 120°;
AOM – BOM = 1/6 × (AOM + BOM);
AOB = AOM + BOM;
AOM – BOM = 1/6 × AOB = 1/6 × 120° = 20°,
AOM = 20° + BOM,
AOB = AOM + BOM = 20° + BOM + BOM = 20° + 2 × BOM,
2 × BOM = AOB – 20° = 120° – 20° = 100°,
BOM = 100° ÷ 2 = 50°;
AOM = 20° + BOM = 20° + 50° = 70°.
Ответ: угол AOM = 70°, угол BOM = 50°
2.
ABC = 90°,
BK – биссектриса ABC =>
ABK = KBC = 1/2 × ABC = 1/2 × 90° = 45°
Ответ: угол ABK = 45°
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Answers & Comments
1.
AOB = 120°;
AOM – BOM = 1/6 × (AOM + BOM);
AOB = AOM + BOM;
AOM – BOM = 1/6 × AOB = 1/6 × 120° = 20°,
AOM = 20° + BOM,
AOB = AOM + BOM = 20° + BOM + BOM = 20° + 2 × BOM,
2 × BOM = AOB – 20° = 120° – 20° = 100°,
BOM = 100° ÷ 2 = 50°;
AOM = 20° + BOM = 20° + 50° = 70°.
Ответ: угол AOM = 70°, угол BOM = 50°
2.
ABC = 90°,
BK – биссектриса ABC =>
ABK = KBC = 1/2 × ABC = 1/2 × 90° = 45°
Ответ: угол ABK = 45°