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# Triangle Pin-down

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Age 7 to 11

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Have you looked at the angles in the triangles drawn? It might help to draw in some radii and work out angles from the centre.

How will you record the triangles you can make? You might like to print off these sheets if you're not using the interactivity:

Sheet of three-peg boards

Sheet of four-peg boards

Sheet of five-peg boards

Sheet of six-peg boards

Sheet of seven-peg boards

Sheet of eight-peg boards

Sheet of nine-peg boards

How will you record the triangles you can make? You might like to print off these sheets if you're not using the interactivity:

Sheet of three-peg boards

Sheet of four-peg boards

Sheet of five-peg boards

Sheet of six-peg boards

Sheet of seven-peg boards

Sheet of eight-peg boards

Sheet of nine-peg boards

How can the school caretaker be sure that the tree would miss the school buildings if it fell?

Billy's class had a robot called Fred who could draw with chalk held underneath him. What shapes did the pupils make Fred draw?