Perimeter

There are 39 NRICH Mathematical resources connected to Perimeter
Perimeter Challenge
problem
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Perimeter challenge

Age
11 to 14
Challenge level
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Can you deduce the perimeters of the shapes from the information given?
Shape Draw
problem
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Shape draw

Age
7 to 11
Challenge level
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Use the information on these cards to draw the shape that is being described.

Through the Window
problem
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Through the window

Age
7 to 11
Challenge level
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My local DIY shop calculates the price of its windows according to the area of glass and the length of frame used. Can you work out how they arrived at these prices?

Dicey Perimeter, Dicey Area
game
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Dicey perimeter, dicey area

In this game for two players, you throw two dice and find the product. How many shapes can you draw on the grid which have that area or perimeter?
Perimeter Possibilities
problem
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Perimeter possibilities

Age
11 to 14
Challenge level
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I'm thinking of a rectangle with an area of 24. What could its perimeter be?
Can they be equal?
problem
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Can they be equal?

Age
11 to 14
Challenge level
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Can you find rectangles where the value of the area is the same as the value of the perimeter?
Changing areas, changing perimeters
problem
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Changing areas, changing perimeters

Age
11 to 14
Challenge level
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How can you change the area of a shape but keep its perimeter the same? How can you change the perimeter but keep the area the same?
Warmsnug Double Glazing
problem
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Warmsnug double glazing

Age
14 to 16
Challenge level
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How have "Warmsnug" arrived at the prices shown on their windows? Which window has been given an incorrect price?
Sizing them Up
problem
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Sizing them up

Age
5 to 7
Challenge level
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Can you put these shapes in order of size? Start with the smallest.

Is there a theorem?
problem
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Is there a theorem?

Age
11 to 14
Challenge level
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Draw a square. A second square of the same size slides around the first always maintaining contact and keeping the same orientation. How far does the dot travel?