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Summing Consecutive Numbers

15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?

Cyclic Quad Jigsaw

A picture is made by joining five small quadrilaterals together to make a large quadrilateral. Is it possible to draw a similar picture if all the small quadrilaterals are cyclic?

Angle Trisection

It is impossible to trisect an angle using only ruler and compasses but it can be done using a carpenter's square.

Drawing Rhombuses

Age 11 to 16

 

This resource is part of "Dotty Grids - Drawing Polygons"



I wonder what maths we can do on dotty paper...

This video might give you some ideas.



Play with the dotted grid below, or print out some dotty paper.