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O-LevelMathematicsGeometry4024/12 · Oct/Nov 2018 · Q122 Marks

Each interior angle of a regular polygon is 175°. Find the number of sides in the polygon.

  1. Each interior angle of a regular polygon is 175°. Find the number of sides in the polygon.[2]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2018). The mark or mark type is shown in brackets.

  1. [2] 72 nfww
  2. M1 for 360/(180-175); or for (n-2) × 180 = 175n oe

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About this question

Topic
Geometry, O-Level Mathematics (syllabus 4024). Structured question, 2 marks.
Source
O-Level Mathematics, Oct/Nov 2018 Paper 1 Variant 2, question 12.

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