4MA0 Foundation June 2015 Paper 2R Q5
5 The diagram shows six triangles on a square grid.

(a) Write down the mathematical name for triangle A. (1)
(b) Write down the letters of the two triangles that are similar but not congruent. (1)
(c) Triangle D can be mapped onto triangle B by a rotation.
(i) On the grid, mark with a cross (×) the centre of this rotation.
(ii) Write down the angle of this rotation.
(2)| Scheme | Marks |
|---|---|
| isosceles | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| A, E | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| (i) Answer: correct cross | B1 |
| (ii) Answer: 180 | B1 |
| (2) | |
| Total 4 marks |
Notes
B1: cross at middle of line joining bottom corner of B to top corner of D.