Working together to improve teaching & learning Leagan Gaeilge
›› Geogebra ›› Perpendicular lines
Use in connection with Student Activity on Perpendicular Lines. 1. Write down the rise and run of the line a. 2. Write down the slope of the line a. 3. Make the line b perpendicular to a by moving the blue dot. The screen will tell you if you've done it correctly. 4. Write down the rise and run of the line b. (Note if isn't a rise, and is actually a fall or is going downwards then you should use a negative number for the fall) 5. Write down the slope of the line b. 6. Compare the answers to questions 2 and 5

(c) Project Maths Development Team