AMC 8 1989 Problem 10

AMC8 1989 年第 10 题

圆★★☆☆☆

Problem What is the number of degrees in the smaller angle between the hour hand and the minute hand on a clock that reads seven o'clock?

时钟显示七点整时，时针和分针之间较小角的度数是多少？

AMC 8 1989 Problem 10 figure

A. $50^\circ$
B. $120^\circ$
C. $135^\circ$
D. $150^\circ$
E. $165^\circ$

正确答案 · Correct Answer

D

解析 · Solution

解析整理中

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