The hour hand of a clock moves from 6
to 9 o'clock. through how many degrees does it move?

90 degrees. Looking at a clock, 12 o'clock going all the way around and back is a 360 degree spin. So 12, 3, 6, and 9 are all 1/4 of a 360 degree spin. If you divide 360 by, you would get a 90 degree turn for each of those numbers mentioned above.

Angles around a point adds up to 360°. the clock is divided into 12 parts to read time, so first we should divide 360° by 12.
360°÷12=30,
difference between 6 and 9 is 3 so, next we have to multiply 30 by 3.
30×3=90
answer-90°