(1) When it is 3 o'clock sharp on the clock face, the hour hand points to 3,

minute hand

Refers to 12, with three 90-degree squares in the middle, 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.