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Math unit36 contructions and enlargements
1.
Unit 36 Constructions and
Enlargements Presentation 1 Lines of Symmetry Presentation 2 Order of Rotational Symmetry Presentation 3 Enlargements Presentation 4 Finding the Scale Factor and Centre of Enlargement
2.
Unit 36 36.1 Lines
of Symmetry
3.
Draw on each
diagram all its lines of symmetry
4.
Complete the diagrams
so that each shape has only the lines of symmetry shown by the dotted line
5.
Unit 36 36.3 Order
of Rotational Symmetry
6.
What is the
order of rotational symmetry? 2 3 1 or none 2 ? ? ? ?
7.
Complete the diagrams
below so that they have the given rotational symmetry about the point. Order 2 Order 4 Order 4 Order 3
8.
Unit 36 36.3 Enlargements
9.
Enlarge this shape
using the given centre of enlargement and scale factors: (a) 2 (b) 3 What is the ratio of the areas in each case? (a) 4 (b) 9??
10.
Unit 36 36.4 Finding
the Scale Factor and Centre of Enlargement
11.
For each of
the shapes give the scale factor and mark the centre of enlargement. (a) 2 (b) 2 (c) 1.5 (d) 2.5?? ??
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