2-2 圓心角、圓周角、弦切角
Authored by 陳 嘉卿
Mathematics
9th Grade
Used 12+ times
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18 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知CD弧=60°，AD弧=50°，則∠ABC度數=?
60°
55°
50°
30°
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知CD弧=60°，AD弧=50°，則∠DOC度數=?
60°
55°
50°
30°
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知AD弧=50°，CD弧=60°，BC弧=200°則∠DAB度數=?
260°
250°
130°
110°
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
∠CAB的中文名稱為？
圓內角
圓周角
圓外角
弦切角
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
∠BAD的中文名稱為？
圓心角
圓周角
圓內角
弦切角
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
直線DE切圓O於A點，若 AC弧＝140°，
且∠BOC＋∠BAC＝150°，則∠BAD=?
50°
60°
70°
80°
7.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
關於此圓內接四邊形的圖，下列敘述哪些正確？
E為圓心
∠A、∠B、∠C、∠D皆為圓周角
∠A＋∠B＝180°
∠A＋∠C＝180°
∠D＋∠B＝180°
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