At 3 o'clock, the hour hand and the minute hand form an angle of _ _ _ _ _ _, and at 6 o'clock, the hour hand and the minute hand form an angle of _ _ _ _ _ _.

(1) When it is 3 o'clock sharp, the hour hand points to 3 and the minute hand points to 12. There are three squares of 90 degrees between them, which are right angles;

(2) At 6 o'clock, the hour hand and the minute hand on the clock face form an angle of 180 degrees on the same straight line.

So the answer is: straight, 180.

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