Constructions

There are 31 NRICH Mathematical resources connected to Constructions
The Farmers' Field Boundary
problem
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The farmers' field boundary

Age
11 to 14
Challenge level
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The farmers want to redraw their field boundary but keep the area the same. Can you advise them?
The square under the hypotenuse
problem
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The square under the hypotenuse

Age
14 to 16
Challenge level
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Can you work out the side length of a square that just touches the hypotenuse of a right angled triangle?
Constructing Triangles
problem
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Constructing triangles

Age
11 to 14
Challenge level
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Generate three random numbers to determine the side lengths of a triangle. What triangles can you draw?
Triangle midpoints
problem
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Triangle midpoints

Age
14 to 16
Challenge level
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You are only given the three midpoints of the sides of a triangle. How can you construct the original triangle?

Curvy areas
problem
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Curvy areas

Age
14 to 16
Challenge level
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Have a go at creating these images based on circles. What do you notice about the areas of the different sections?
Attractive rotations
problem
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Attractive rotations

Age
11 to 14
Challenge level
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Here is a chance to create some attractive images by rotating shapes through multiples of 90 degrees, or 30 degrees, or 72 degrees or...
Squirty
problem
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Squirty

Age
14 to 16
Challenge level
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Using a ruler, pencil and compasses only, it is possible to construct a square inside any triangle so that all four vertices touch the sides of the triangle.
Cool As Ice
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Cool as ice

Age
11 to 16
Challenge level
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Design and construct a prototype intercooler which will satisfy agreed quality control constraints.
A rational search
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A rational search

Age
16 to 18
Challenge level
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Investigate constructible images which contain rational areas.
Three Tears
problem

Three tears

Age
14 to 16
Challenge level
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Construct this design using only compasses