O-LevelMathematicsGeometry4024/11 · Oct/Nov 2019 · Q154 Marks
In the diagram, three small triangles are shaded. Shade one more small triangle to give a diagram that has exactly one line of symmetry. [Figure X.X - diagram of a larger triangle made of smaller triangles]
- (a)In the diagram, three small triangles are shaded. Shade one more small triangle to give a diagram that has exactly one line of symmetry. [Figure X.X - diagram of a larger triangle made of smaller triangles][1]
- (b)(i)In the diagram, the three triangles and the circle form a figure that has rotational symmetry of order 3. Find x. [Figure X.X - diagram of a circle with inscribed/connected triangles and angles x and y][1]
- (b)(ii)Find y.[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 2019). The mark or mark type is shown in brackets.
- [1] [Shaded diagram showing the top triangle, the two adjacent triangles below it, and the triangle directly below the top one, forming a Y-shape with a vertical line of symmetry.]
- [1] 46
- [2] 32
- M1 for 360-3 × 88 oe or for 360/3 - 88 oe
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