Who is the author of Much Ado About Nothing?
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What is the measure of the angle that is supplementary to a 40° angle?
In the figure below, line t is parallel to line u, and line v is perpendicular to line u.
In the figure below, line x is parallel to line y. What is the measure of angle α?
局域网在网络拓扑上主要采用了环型、星型和【 】结构。