O-LevelMathematicsGeometry4024/12 · Oct/Nov 2017 · Q153 Marks
The diagram shows a figure made from five identical triangles. The figure has rotational symmetry.
- (a)Write down the order of rotational symmetry.[1]
- (b)Each marked angle is 110°. Find the angles of one of the triangles.[2]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2017). The mark or mark type is shown in brackets.
- [1] 15(a) 5
- [2] 15(b) 72, 70, 38 all three
- C1 for 72 and 70; or for three angles totalling 180°.
Write your answer and get it marked
On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.
Sign up free →