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Oak MathsTest · Maths

Interior angles of a polygon

The starter and exit quiz of the lesson “Interior angles of a polygon”, from the unit “Geometrical properties: polygons” (Year 8 Maths) by Oak National Academy.

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Oak National Academy

12 questions

  1. An ___ angle is an angle formed inside a polygon by two of its edges.
  2. The interior angles of a triangle sum to ___°.
  3. What is the size of ∠ABC?
  4. What is the value of x? x=___.
  5. Starting with the smallest, sort the angles in ascending order of size.
  6. What is the size of the angle x°?
  7. A pentadecagon has 15 sides. The minimum number of triangles that it could be split into is ___.
  8. An octadecagon has 18 sides. Which calculation would find the sum of its interior angles?
  9. The interior angles in the hexagon sum to ___°.
  10. The interior angles of a pentagon sum to ___°.
  11. The size of the angle x° is ___°.
  12. The size of the angle x° is ___°.

License: OGL

Interior angles of a polygon · Examplary