# Behind the Scenes: Slider Exercise 1

- Author:
- Tim Brzezinski

## 1) Plot 2 Points: A and B. Create a slider (name = a). Slider settings: Integer. Min = 0, Max = 1, Increment = 0.01

## 2) Type this command in the input bar. It IS case-sensitive!

## 3) If you did step (2) correctly, you should get something that looks like this. Slide the slider back and forth. What do you notice?

## QUESTIONS TO CONSIDER BEFORE YOU PROCEED:

**Where is the image of**

*A = A'*located when a = 0? Why is this? How/why does this dilation of*A*about*B*with given scale factor (1-a) translate*A'*from*A*to*B*?## 3) Construct segment with endpoints A and A'.

## QUESTION TO CONSIDER:

As the slider

**a**moves from**a**= 0 to**a**=1,*A'*moves from*A*to*B*. This gives the effect of segment with endpoints*A*,*B*dynamically being drawn. Yet at what value for**a**does this fail to accomplish this effect? How can we fix this?