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Oak MathsTest · Maths

Similarity in shapes

The starter and exit quiz of the lesson “Similarity in shapes”, from the unit “Geometrical properties: similarity and Pythagoras' theorem” (Year 9 Maths) by Oak National Academy.

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Oak National Academy

12 questions

  1. When an object is enlarged by a scale factor of 2, the object and its image are __________.
  2. A triangle is enlarged by a scale factor of 2. Which of the following measurements will remain invariant?
  3. Which angles are always equal when found on figure containing parallel lines and a transversal?
  4. Which angle is corresponding with ∠ECD?
  5. Which rectangle is not similar to rectangle R?
  6. Triangle B is an enlargement of triangle A. What is the scale factor?
  7. Which triangle is not similar to the others?
  8. The table shows the base and height of four rectangles. Which rectangle is similar to a rectangle that is 2 cm by 5 cm?
  9. Which shape is similar to shape P?
  10. The length of EB is ___ cm.
  11. The length of CD is ___ cm.
  12. ∆ABC is similar to ∆ACD. The value of x is ___.

License: OGL

Similarity in shapes · Examplary