Geometer's Sketchpad Applet

Click and drag points A, C, D, H, G, or F to change the angles formed by the parallel lines and the transversal CG.

Vertical Angles Questions

1. What is the measure of angle ABC?

2. What is the measure of angle DBE?

3. How are they similar?

4. What is the measure of angle CBD?

5. What is the measure of angle ABE?

6. How are they similar?

7. If angles ABC and DBE are called vertical angles, and angles CBD and ABE are called veritcal angles, what can you conclude about vertical angles?

Corresponding Angles Questions

1. What is the measure of angle ABE?

2. What is the measure of angle FEG?

3. How are they similar?

Angles ABE and FEG are called Corresponding Angles

4. What is the measure of angle DBE?

5. Based on your anwers from questions 1, 2, and 3, what do you think the measure of angle HEG is?

6. If angles ABE and FEG are called corresponding angles, and angles DBE and HEG are called corresponding angles, what can you conclude about corresponding angles?

 

Check your work! Answers