Tetromino Diagonal

Age
14 to 16
Challenge level
filled star empty star empty star

Can you calculate the length of this diagonal line?

Thinking mathematically

Exploring and noticing Working systematically Conjecturing and generalising Visualising and representing Explaining, convincing and proving

Mathematical mindsets

Being curious Being resourceful Being resilient Being collaborative

Problem



 

Four unit squares are placed edge to edge as shown. What is the length of the diagonal line drawn?

 

Tetromino Diagonal



If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.