GeoGebra 5

1. Move the green slider at the top right corner of the picture. Make the green angle 43 degrees. What is the blue angle?

2. Move the green slider at the top right corner of the picture. Make the blue angle 120 degrees. What is the green angle?

3. Without moving the green slider at the top right corner of the picture, if the green angle measures 55 degrees, what would the blue angle measure? You can use the slider to check your answer.

4. What is the relationship between the green angle measure and the blue angle measure? Write your answer in a complete sentence, and use one of the following words in your response: complementary // supplementary // congruent