Investigation 1 Douglas
- Author:
- Kay Douglas, GeoGebra Materials Team
- Topic:
- Angles
Place your mouse on point B.
Move point B up and down.
A. Record the angle measurements for angles <DEB, <DAE, <AEC, and <CEB for 10 movements.
B. Write down three things that you notice as the picture changes.
C. Make an observation (conjecture) about the red/blue angles. Is your conjecture always true?