Specification References: G1.8h G1.8h Understand congruence and similarity. Use similarity. Understand and use conditions for congruent triangles. |
Questions involving calculations of sides in similar shapes will not be set at Foundation tier.
Candidates will be expected to know the connection between the linear, area and volume scale factors of similar shapes and solids. Questions may be asked that exploit the relationship between weight and volume, area and cost of paint, etc.
Candidates can justify congruence by a variety of methods but their justifications must be complete. The use of SSS notation, etc. is not expected but will make the justification of congruence easier.
Scales will be given as, for example, 1cm represents 10km, or 1 : 100.
What is the ratio of the volume of box A to box B?