We see angles everyday when we look at clocks. The hands on clocks join in the center much like rays join at a common endpoint to form angles. Look at the clocks below. In which clock do the hands form a right angle?
right angle
A.
B.
C.
Click on the arrow in the box and select your answer.
Can you think of other positions the clock hands could be in to make a right angle? Click here for more examples.