Below, you have similar triangles ABC and DEF. You can adjust the size of sides AB and De using the given sliders. You can also adjust angles A and D or B and E using sliders. [br][br]1. Change AB so that it is not equal to DE. What do you notice about the shapes of ABC and DEF?[br]2. Change AB to a value of 3 and DE to a value of 6. What do you notice about the corresponding sides? The corresponding angles?[br]3. Look at the ratios of the corresponding sides. What pattern do you see?[br]4. Adjust the angles. What do you notice about the shapes of both triangles?[br]5. How would you describe similar triangles?

Adapted from Task 3 by Kheong http://www.geogebratube.org/material/show/id/13800