The starter and exit quiz of the lesson “The effect of enlargement on the area of a shape”, from the unit “Similarity” (Year 10 Maths) by Oak National Academy.
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Oak National Academy
12 questions
A scale factor is the multiplier between __________ shapes that describes how large one shape is compared to the other.
This sector is enlarged by scale factor \frac{1}{2}. The angle in the image is ___°.
Each square on this coordinate grid is 1 unit long. This object is enlarged by a scale factor of 4 to make its image. Calculate the perimeter of the image.
A pentagon has a perimeter of 60 cm. The pentagon is enlarged by scale factor 7. The perimeter of the image is ___ cm.
The object is enlarged by a scale factor of \frac{1}{3} to make the image. What is the perimeter of the image?
A shape is enlarged by a scale factor of \frac{3}{2} to make its image. The perimeter of the image is 42 cm. The perimeter of the object is ___ cm.
A pentagon is enlarged by scale factor 2. What properties of the pentagon and its image are invariant?
Rectangle A has been enlarged to create rectangle B. Select the correct statements.
Rectangle A has been enlarged to create rectangle B. The area of rectangle B is ___ cm²
Trapezium B is an enlargement of trapezium A. Calculate the area of trapezium B.
Match each linear scale factor to the area scale factor.
Shape S is an enlargement an enlargement of shape R. The area of shape R is 32 cm². The area of shape S is ___ cm².
