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Aitchison College Academic Resources.
E4.2 Geometrical constructions
1 Measure and draw tines and angles.
2 Construct a triangle, given the lengths of all
sides, using a ruler and pak of compasses only.
3 Draw, use and interpret nets.
E4.3 Scale drawings
1 Draw and interpret scale drawings.
2 Use and interpret three-figure bearings.
E44 Similarity
1 Calculate lengths of similar shapes.
2 Use the relationships between lengths and areas
of similar shapes and lengths, surface areas and
volumes of similar solids.
3 Solve problems and give simple explanations
invotving similarity.
£4.5 Symmetry
1 Recognise line symmetry and order of rotational
symmetry in two dimensions.
2 Recognise symmetry properties of prisms,
—__oyfinders, pyramids and cones.
Notes and examples
A ruler should be used for ail straight edges.
Constructions of perpendicular bisectors and angle
hisactors are mat racy tinct
9. construct a rhombus by drawing two triangles.
Construction arcs must be shown.
Examples include:
© drew nets of cubes, cuboids, prisms and
Pyramids
© use measurements from nets to calculate
volumes and surface areas.
Notes and examples
Aruler must be used for al straight edges.
Bearings are measured clockwise from north
(000° to 360%.
eg. find the bearing of A from 2 if the bearing of B
from A is 025°.
Includes an understanding of the terms north, east,
south and west.
€g. point Dis due east of point C.
Notes and examples
Includes use of scale factor, e.g.
Volume of 4 _ (Length of 4)"
Volume of B (Length of B) .
Includes showing that two triangles are simiar
using geometric reasons.
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