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若L1//L2,L為截線,同位角會?
互補
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若L1//L2,L為截線,同側內角會?
若L1//L2,L為截線,內錯角會?
∠ 1為70° ,則∠ 2幾度?
110°
70°
20°
∠ 7為80° ,則∠ 8幾度?
100°
10°
80°
∠5為65° ,則∠ 2幾度?
65°
115°
25°
∠7為85° ,則∠4幾度?
95°
85°
5°
∠5為75° ,則∠4幾度?
15°
75°
105°
∠2為76° ,則∠7幾度?
104°
76°
14°
∠2為60° ,則∠3幾度?
60°
120°
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