2D shapes and their properties

There are 152 NRICH Mathematical resources connected to 2D shapes and their properties
What Shape for Two
problem

What shape for two

Age
7 to 14
Challenge level
filled star empty star empty star
'What Shape?' activity for adult and child. Can you ask good questions so you can work out which shape your partner has chosen?
Gym Bag
problem

Gym bag

Age
11 to 16
Challenge level
filled star filled star empty star
Can Jo make a gym bag for her trainers from the piece of fabric she has?
Curve Spotting
problem

Curve spotting

Age
5 to 7
Challenge level
filled star empty star empty star
Can you spot circles, spirals and other types of curves in these photos?
Opening patterns
problem

Opening patterns

Age
5 to 7
Challenge level
filled star empty star empty star
Look at some of the patterns in the Olympic Opening ceremonies and see what shapes you can spot.
A rational search
problem

A rational search

Age
16 to 18
Challenge level
filled star filled star filled star
Investigate constructible images which contain rational areas.
Sports Equipment
problem

Sports equipment

Age
7 to 11
Challenge level
filled star empty star empty star
If these balls are put on a line with each ball touching the one in front and the one behind, which arrangement makes the shortest line of balls?
Lawnmower
problem

Lawnmower

Age
14 to 16
Challenge level
filled star empty star empty star
A kite shaped lawn consists of an equilateral triangle ABC of side 130 feet and an isosceles triangle BCD in which BD and CD are of length 169 feet. A gardener has a motor mower which cuts strips of grass exactly one foot wide and wishes to cut the entire lawn in parallel strips. What is the minimum number of strips the gardener must mow?
Lying and Cheating
problem

Lying and cheating

Age
11 to 14
Challenge level
filled star filled star empty star
Follow the instructions and you can take a rectangle, cut it into 4 pieces, discard two small triangles, put together the remaining two pieces and end up with a rectangle the same size. Try it!
Same Shapes
problem

Same shapes

Age
5 to 7
Challenge level
filled star filled star filled star
How can these shapes be cut in half to make two shapes the same shape and size? Can you find more than one way to do it?
Efficient packing
problem

Efficient packing

Age
14 to 16
Challenge level
filled star empty star empty star
How efficiently can you pack together disks?