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Using the sum of the interior angles of a triangle

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

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Oak National Academy

12 questions

  1. The sum of 241, 68 and 192 is ___.
  2. Simplify the following expression 3x+5y-2x+9y+3x+12.
  3. A triangle DEF, where DE = 23 cm, DF = 23 cm and angle EDF is 45° is __________ triangle.
  4. Solve 29=54-2x
  5. Which of these are correct for the size of the angle marked n?
  6. Select the statements that best complete the following sentence. By tearing the corners off of a triangle and arranging them together at a point it you have...
  7. The size of the angle x° is ___°.
  8. Match the two angles of a triangle with its third angle.
  9. In which of these triangles is there enough information for you to calculate the size of the missing angle?
  10. The size of the angle x° is ___°.
  11. Which of the following are calculations to find the value of y?
  12. Work out the value of m.

License: OGL

Using the sum of the interior angles of a triangle · Examplary