Skip over navigation
Perpendicular Lines
Age 14 to 16
Challenge Level 
You may want to take a look at Parallel Lines before attempting this problem.
Take a look at the interactivity below which allows you to move the vertices and make different squares.
The adjacent sides of a square are perpendicular to each other.
How would you describe going from one vertex to the next? And to the next? And to the next?...
You may also like
Intersections
Change one equation in this pair of simultaneous equations very slightly and there is a big change in the solution. Why?
