Effortless Trisections

Interact with this app for a few minutes. Then, answer the questions that follow.
What can we conclude about the four lines shown? How do you know this to be true?
Explain the phenomenon you see here as best as you can in your own words.
You can use this space to help add to your explanation above.
Close
– Tim Brzezinski

Information: Effortless Trisections