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If the sides of the triangle in the diagram are 3, 4 and 5, what is the area of the shaded square?
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Draw all the possible distinct triangles on a 4 x 4 dotty grid. Convince me that you have all possible triangles.
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If the original hexagon has sides of length 3 units what is the
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Circle properties and circle theorems. 2D shapes and their properties. Enlargements and scale factors. Mathematical reasoning & proof. Creating and manipulating expressions and formulae. Similarity and congruence. Visualising. Regular polygons and circles. Pythagoras' theorem. Area - circles, sectors and segments.
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NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.