Take a clock and fix its minutes hand at 12.
Note the angles made by minutes hand in the given intervals of time :
Is the angle turned through by the minute hand directly proportional to the time that has passed? Yes!
From the above table, you can also see
`T_(1), T_(2) = A_(1) : A_(2)`, becausee
`T_(1): T_(2) = 15: 30 =1:2`
`A_(1): A_(2) = 90: 180 =1:2`
Check if `T_(2): T_(3) = A_(2) : A_(3) and T_(3): T_(4) = A_(3): A_(4)`
You can repeat this activity by choosing your own time interval.