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Shape, Space and Measures
Circles are always similar.
Squares are always similar.
Rectangles are always similar.
In questions 4-6, the pairs of triangles are congruent. State which of the conditions for congruency applies (SSS, SAS, AAS or RHS).
Triangles PQR and PRS.
Triangles ABC and CDE.
Two similar shapes have volumes in the ratio 1:8. What's the ratio of their surface areas?
ABCDE and PQRST are similar. Find the length of PT.
Two similar shapes have areas of 90cm2 and 62.5cm2. The perimeter of the smaller shape is 40cm. What's the perimeter of the larger shape?
The Easypac Soup Company produces small cylindrical tins of radius 3cm, and similar large tins of radius 5cm. If a small tin contains 243ml of soup, how much does a large tin contain?