You may also like

problem icon

Just Opposite

A and C are the opposite vertices of a square ABCD, and have coordinates (a,b) and (c,d), respectively. What are the coordinates of the vertices B and D? What is the area of the square?

problem icon

Ladder and Cube

A 1 metre cube has one face on the ground and one face against a wall. A 4 metre ladder leans against the wall and just touches the cube. How high is the top of the ladder above the ground?

problem icon


Is there a relationship between the coordinates of the endpoints of a line and the number of grid squares it crosses?

Lost on Alpha Prime

Stage: 4 Challenge Level: Challenge Level:1

If you have not met this type of problem before - solving it in 2D first is a very good idea.

It is worth looking at a very simple case first and spend some time understanding the distances in 3D.

When you enter a single location what does the distance tell you about the possible places the metagiff can be?