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http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

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Page 1: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

eNRICHing Shape & Space

BromleyFebruary 2015

Page 2: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Tilted Squares

Can you find a quick and easy method to

work out the areas of tilted squares?

Page 3: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Reflecting Squarely

In how many ways can you fit all three pieces

together to make shapes with line

symmetry?

Page 4: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Shady Symmetry

How many different symmetrical patterns

can you make?

Page 5: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Square It

Can you beat the computer?

Page 6: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Opposite vertices

If I give you a line, can you tell me straight away if that line could be:

• the side of a square? • the diagonal of a square?

If such squares CAN be drawn, can you find an efficient method for drawing them?

Page 7: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Vector Journeys

If I give you a vector that represents the side of a square, can you find the vectors that complete the square?

If I give you a vector that represents the diagonal of a square, can you find the vectors that complete the square?

Page 8: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Isosceles Triangles

Draw some isosceles triangles with an area of 9 cm2 and a vertex at (20, 20).

If all the vertices have whole number coordinates, how many is it possible to draw?

Can you explain how you know that you have found them all?

Page 9: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Can they be equal?

Can you find rectangles where the value of the area is the same as the value of the perimeter?

Page 10: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Cuboid Challenge

Cut a square from each corner and fold up the flaps.

What volumes are possible for different sizes of cut-out squares?

Page 11: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Finding angles in a triangle using a Geoboard environment

Start of a journey: a 9-point circle

Page 12: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

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Kite in a square

What fraction of the total area is shaded?

Page 13: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

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Marbles in a Box

How many winning lines are there?

Page 14: Http://nrich.maths.org eNRICHing Shape & Space Bromley February 2015

http://nrich.maths.org

Geometry & Measure collection

http://nrich.maths.org/8743